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Finding the Fourth Proportional to 664,433,781.60, 996,650,672.40 and 354,497,390.40

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Solution

The fourth proportional to 664,433,781.60, 996,650,672.40 and 354,497,390.40 is: 531,746,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,433,781.60 : 996,650,672.40 = 354,497,390.40 : x
  2. Step 2: Convert to fraction form
    664,433,781.60/996,650,672.40 = 354,497,390.40/x
  3. Step 3: Cross multiply
    664,433,781.60x = 996,650,672.40 × 354,497,390.40
  4. Step 4: Simplify right side
    664,433,781.60x = 353,310,062,506,205,248
  5. Step 5: Solve for x
    x = 353,310,062,506,205,248/664,433,781.60
  6. Step 6: Final answer
    x = 531,746,085.60

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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.