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Finding the Fourth Proportional to 539,959.36, 745,151.79 and 313,604.86

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Solution

The fourth proportional to 539,959.36, 745,151.79 and 313,604.86 is: 432,779.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,959.36 : 745,151.79 = 313,604.86 : x
  2. Step 2: Convert to fraction form
    539,959.36/745,151.79 = 313,604.86/x
  3. Step 3: Cross multiply
    539,959.36x = 745,151.79 × 313,604.86
  4. Step 4: Simplify right side
    539,959.36x = 233,683,222,781.70
  5. Step 5: Solve for x
    x = 233,683,222,781.70/539,959.36
  6. Step 6: Final answer
    x = 432,779.28

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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.