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Finding the Fourth Proportional to 506,805.84, 699,398.28 and 280,472.40

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Solution

The fourth proportional to 506,805.84, 699,398.28 and 280,472.40 is: 387,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,805.84 : 699,398.28 = 280,472.40 : x
  2. Step 2: Convert to fraction form
    506,805.84/699,398.28 = 280,472.40/x
  3. Step 3: Cross multiply
    506,805.84x = 699,398.28 × 280,472.40
  4. Step 4: Simplify right side
    506,805.84x = 196,161,914,147.47
  5. Step 5: Solve for x
    x = 196,161,914,147.47/506,805.84
  6. Step 6: Final answer
    x = 387,055.35

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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.