Home / 1,275,320.20-1,759,874.42-731,428.04

Finding the Fourth Proportional to 1,275,320.20, 1,759,874.42 and 731,428.04

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Solution

The fourth proportional to 1,275,320.20, 1,759,874.42 and 731,428.04 is: 1,009,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,320.20 : 1,759,874.42 = 731,428.04 : x
  2. Step 2: Convert to fraction form
    1,275,320.20/1,759,874.42 = 731,428.04/x
  3. Step 3: Cross multiply
    1,275,320.20x = 1,759,874.42 × 731,428.04
  4. Step 4: Simplify right side
    1,275,320.20x = 1,287,221,497,666.74
  5. Step 5: Solve for x
    x = 1,287,221,497,666.74/1,275,320.20
  6. Step 6: Final answer
    x = 1,009,332.01

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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.