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Finding the Fourth Proportional to 865,502.60, 1,194,356.82 and 478,332.53

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Solution

The fourth proportional to 865,502.60, 1,194,356.82 and 478,332.53 is: 660,078.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,502.60 : 1,194,356.82 = 478,332.53 : x
  2. Step 2: Convert to fraction form
    865,502.60/1,194,356.82 = 478,332.53/x
  3. Step 3: Cross multiply
    865,502.60x = 1,194,356.82 × 478,332.53
  4. Step 4: Simplify right side
    865,502.60x = 571,299,713,461.57
  5. Step 5: Solve for x
    x = 571,299,713,461.57/865,502.60
  6. Step 6: Final answer
    x = 660,078.57

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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.