Home / 714,077,281.28-985,393,478.04-396,557,687.36

Finding the Fourth Proportional to 714,077,281.28, 985,393,478.04 and 396,557,687.36

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Solution

The fourth proportional to 714,077,281.28, 985,393,478.04 and 396,557,687.36 is: 547,231,187.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,077,281.28 : 985,393,478.04 = 396,557,687.36 : x
  2. Step 2: Convert to fraction form
    714,077,281.28/985,393,478.04 = 396,557,687.36/x
  3. Step 3: Cross multiply
    714,077,281.28x = 985,393,478.04 × 396,557,687.36
  4. Step 4: Simplify right side
    714,077,281.28x = 390,765,358,791,169,344
  5. Step 5: Solve for x
    x = 390,765,358,791,169,344/714,077,281.28
  6. Step 6: Final answer
    x = 547,231,187.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.