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Finding the Fourth Proportional to 661,258.20, 989,813.70 and 474,634.20

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Solution

The fourth proportional to 661,258.20, 989,813.70 and 474,634.20 is: 710,462.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,258.20 : 989,813.70 = 474,634.20 : x
  2. Step 2: Convert to fraction form
    661,258.20/989,813.70 = 474,634.20/x
  3. Step 3: Cross multiply
    661,258.20x = 989,813.70 × 474,634.20
  4. Step 4: Simplify right side
    661,258.20x = 469,799,433,648.54
  5. Step 5: Solve for x
    x = 469,799,433,648.54/661,258.20
  6. Step 6: Final answer
    x = 710,462.92

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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.