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Finding the Fourth Proportional to 539,901.75, 745,064.48 and 313,561.83

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Solution

The fourth proportional to 539,901.75, 745,064.48 and 313,561.83 is: 432,715.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,901.75 : 745,064.48 = 313,561.83 : x
  2. Step 2: Convert to fraction form
    539,901.75/745,064.48 = 313,561.83/x
  3. Step 3: Cross multiply
    539,901.75x = 745,064.48 × 313,561.83
  4. Step 4: Simplify right side
    539,901.75x = 233,623,780,248.99
  5. Step 5: Solve for x
    x = 233,623,780,248.99/539,901.75
  6. Step 6: Final answer
    x = 432,715.36

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1.5x scale

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.