Home / 861,276,998.40-1,291,915,497.60-402,111,974.40

Finding the Fourth Proportional to 861,276,998.40, 1,291,915,497.60 and 402,111,974.40

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Solution

The fourth proportional to 861,276,998.40, 1,291,915,497.60 and 402,111,974.40 is: 603,167,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,276,998.40 : 1,291,915,497.60 = 402,111,974.40 : x
  2. Step 2: Convert to fraction form
    861,276,998.40/1,291,915,497.60 = 402,111,974.40/x
  3. Step 3: Cross multiply
    861,276,998.40x = 1,291,915,497.60 × 402,111,974.40
  4. Step 4: Simplify right side
    861,276,998.40x = 519,494,691,497,894,400
  5. Step 5: Solve for x
    x = 519,494,691,497,894,400/861,276,998.40
  6. Step 6: Final answer
    x = 603,167,961.60

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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.