Home / 1,387,932.23-1,915,199.03-767,638.83

Finding the Fourth Proportional to 1,387,932.23, 1,915,199.03 and 767,638.83

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Solution

The fourth proportional to 1,387,932.23, 1,915,199.03 and 767,638.83 is: 1,059,260.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,932.23 : 1,915,199.03 = 767,638.83 : x
  2. Step 2: Convert to fraction form
    1,387,932.23/1,915,199.03 = 767,638.83/x
  3. Step 3: Cross multiply
    1,387,932.23x = 1,915,199.03 × 767,638.83
  4. Step 4: Simplify right side
    1,387,932.23x = 1,470,181,138,768.14
  5. Step 5: Solve for x
    x = 1,470,181,138,768.14/1,387,932.23
  6. Step 6: Final answer
    x = 1,059,260.03

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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.