Home / 878,974,902.40-1,318,672,305.60-265,565,142.40

Finding the Fourth Proportional to 878,974,902.40, 1,318,672,305.60 and 265,565,142.40

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Solution

The fourth proportional to 878,974,902.40, 1,318,672,305.60 and 265,565,142.40 is: 398,411,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,974,902.40 : 1,318,672,305.60 = 265,565,142.40 : x
  2. Step 2: Convert to fraction form
    878,974,902.40/1,318,672,305.60 = 265,565,142.40/x
  3. Step 3: Cross multiply
    878,974,902.40x = 1,318,672,305.60 × 265,565,142.40
  4. Step 4: Simplify right side
    878,974,902.40x = 350,193,398,615,600,320
  5. Step 5: Solve for x
    x = 350,193,398,615,600,320/878,974,902.40
  6. Step 6: Final answer
    x = 398,411,146.51

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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.