Home / 772,647,489.60-1,158,971,234.40-465,781,646.40

Finding the Fourth Proportional to 772,647,489.60, 1,158,971,234.40 and 465,781,646.40

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Solution

The fourth proportional to 772,647,489.60, 1,158,971,234.40 and 465,781,646.40 is: 698,672,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,647,489.60 : 1,158,971,234.40 = 465,781,646.40 : x
  2. Step 2: Convert to fraction form
    772,647,489.60/1,158,971,234.40 = 465,781,646.40/x
  3. Step 3: Cross multiply
    772,647,489.60x = 1,158,971,234.40 × 465,781,646.40
  4. Step 4: Simplify right side
    772,647,489.60x = 539,827,529,689,072,320
  5. Step 5: Solve for x
    x = 539,827,529,689,072,320/772,647,489.60
  6. Step 6: Final answer
    x = 698,672,469.60

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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.