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Finding the Fourth Proportional to 658,809.80, 986,027.70 and 478,382.30

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Solution

The fourth proportional to 658,809.80, 986,027.70 and 478,382.30 is: 715,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,809.80 : 986,027.70 = 478,382.30 : x
  2. Step 2: Convert to fraction form
    658,809.80/986,027.70 = 478,382.30/x
  3. Step 3: Cross multiply
    658,809.80x = 986,027.70 × 478,382.30
  4. Step 4: Simplify right side
    658,809.80x = 471,698,198,989.71
  5. Step 5: Solve for x
    x = 471,698,198,989.71/658,809.80
  6. Step 6: Final answer
    x = 715,985.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.