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Finding the Fourth Proportional to 486,486.28, 670,981.50 and 418,616.92

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Solution

The fourth proportional to 486,486.28, 670,981.50 and 418,616.92 is: 577,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,486.28 : 670,981.50 = 418,616.92 : x
  2. Step 2: Convert to fraction form
    486,486.28/670,981.50 = 418,616.92/x
  3. Step 3: Cross multiply
    486,486.28x = 670,981.50 × 418,616.92
  4. Step 4: Simplify right side
    486,486.28x = 280,884,208,906.98
  5. Step 5: Solve for x
    x = 280,884,208,906.98/486,486.28
  6. Step 6: Final answer
    x = 577,373.34

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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.