Home / 6,518,780.40-9,779,920.20-5,813,691.60

Finding the Fourth Proportional to 6,518,780.40, 9,779,920.20 and 5,813,691.60

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Solution

The fourth proportional to 6,518,780.40, 9,779,920.20 and 5,813,691.60 is: 8,722,097.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518,780.40 : 9,779,920.20 = 5,813,691.60 : x
  2. Step 2: Convert to fraction form
    6,518,780.40/9,779,920.20 = 5,813,691.60/x
  3. Step 3: Cross multiply
    6,518,780.40x = 9,779,920.20 × 5,813,691.60
  4. Step 4: Simplify right side
    6,518,780.40x = 56,857,439,915,410.31
  5. Step 5: Solve for x
    x = 56,857,439,915,410.31/6,518,780.40
  6. Step 6: Final answer
    x = 8,722,097.76

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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.