Home / 1,418,128.70-2,125,419.14-708,354.86

Finding the Fourth Proportional to 1,418,128.70, 2,125,419.14 and 708,354.86

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Solution

The fourth proportional to 1,418,128.70, 2,125,419.14 and 708,354.86 is: 1,061,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,128.70 : 2,125,419.14 = 708,354.86 : x
  2. Step 2: Convert to fraction form
    1,418,128.70/2,125,419.14 = 708,354.86/x
  3. Step 3: Cross multiply
    1,418,128.70x = 2,125,419.14 × 708,354.86
  4. Step 4: Simplify right side
    1,418,128.70x = 1,505,550,977,356.02
  5. Step 5: Solve for x
    x = 1,505,550,977,356.02/1,418,128.70
  6. Step 6: Final answer
    x = 1,061,646.22

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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.