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Finding the Fourth Proportional to 539,960.36, 745,153.17 and 313,605.86

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Solution

The fourth proportional to 539,960.36, 745,153.17 and 313,605.86 is: 432,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,960.36 : 745,153.17 = 313,605.86 : x
  2. Step 2: Convert to fraction form
    539,960.36/745,153.17 = 313,605.86/x
  3. Step 3: Cross multiply
    539,960.36x = 745,153.17 × 313,605.86
  4. Step 4: Simplify right side
    539,960.36x = 233,684,400,709.58
  5. Step 5: Solve for x
    x = 233,684,400,709.58/539,960.36
  6. Step 6: Final answer
    x = 432,780.66

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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.