Home / 1,005,471,447.11-1,387,742,703.47-665,780,779.30

Finding the Fourth Proportional to 1,005,471,447.11, 1,387,742,703.47 and 665,780,779.30

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Solution

The fourth proportional to 1,005,471,447.11, 1,387,742,703.47 and 665,780,779.30 is: 918,904,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,471,447.11 : 1,387,742,703.47 = 665,780,779.30 : x
  2. Step 2: Convert to fraction form
    1,005,471,447.11/1,387,742,703.47 = 665,780,779.30/x
  3. Step 3: Cross multiply
    1,005,471,447.11x = 1,387,742,703.47 × 665,780,779.30
  4. Step 4: Simplify right side
    1,005,471,447.11x = 923,932,418,582,340,608
  5. Step 5: Solve for x
    x = 923,932,418,582,340,608/1,005,471,447.11
  6. Step 6: Final answer
    x = 918,904,680.22

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Half scale
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Double scale
Find fourth proportional to 1,005,471,448.11, 1,387,742,704.85 and 665,780,780.30
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.