Home / 1,287,460.40-1,932,065.40-718,840.40

Finding the Fourth Proportional to 1,287,460.40, 1,932,065.40 and 718,840.40

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Solution

The fourth proportional to 1,287,460.40, 1,932,065.40 and 718,840.40 is: 1,078,749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,460.40 : 1,932,065.40 = 718,840.40 : x
  2. Step 2: Convert to fraction form
    1,287,460.40/1,932,065.40 = 718,840.40/x
  3. Step 3: Cross multiply
    1,287,460.40x = 1,932,065.40 × 718,840.40
  4. Step 4: Simplify right side
    1,287,460.40x = 1,388,846,664,962.16
  5. Step 5: Solve for x
    x = 1,388,846,664,962.16/1,287,460.40
  6. Step 6: Final answer
    x = 1,078,749.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.