Home / 387,103,624.40-580,655,436.60-99,889,288.40

Finding the Fourth Proportional to 387,103,624.40, 580,655,436.60 and 99,889,288.40

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Solution

The fourth proportional to 387,103,624.40, 580,655,436.60 and 99,889,288.40 is: 149,833,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,103,624.40 : 580,655,436.60 = 99,889,288.40 : x
  2. Step 2: Convert to fraction form
    387,103,624.40/580,655,436.60 = 99,889,288.40/x
  3. Step 3: Cross multiply
    387,103,624.40x = 580,655,436.60 × 99,889,288.40
  4. Step 4: Simplify right side
    387,103,624.40x = 58,001,258,367,565,320
  5. Step 5: Solve for x
    x = 58,001,258,367,565,320/387,103,624.40
  6. Step 6: Final answer
    x = 149,833,932.60

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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.