Home / 664,434,540.60-996,651,810.90-319,304,945.40

Finding the Fourth Proportional to 664,434,540.60, 996,651,810.90 and 319,304,945.40

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Solution

The fourth proportional to 664,434,540.60, 996,651,810.90 and 319,304,945.40 is: 478,957,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,434,540.60 : 996,651,810.90 = 319,304,945.40 : x
  2. Step 2: Convert to fraction form
    664,434,540.60/996,651,810.90 = 319,304,945.40/x
  3. Step 3: Cross multiply
    664,434,540.60x = 996,651,810.90 × 319,304,945.40
  4. Step 4: Simplify right side
    664,434,540.60x = 318,235,852,062,235,584
  5. Step 5: Solve for x
    x = 318,235,852,062,235,584/664,434,540.60
  6. Step 6: Final answer
    x = 478,957,418.10

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Double scale
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Similar ratio
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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.