Home / 8,690,666.20-13,035,999.30-5,478,400.60

Finding the Fourth Proportional to 8,690,666.20, 13,035,999.30 and 5,478,400.60

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Solution

The fourth proportional to 8,690,666.20, 13,035,999.30 and 5,478,400.60 is: 8,217,600.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690,666.20 : 13,035,999.30 = 5,478,400.60 : x
  2. Step 2: Convert to fraction form
    8,690,666.20/13,035,999.30 = 5,478,400.60/x
  3. Step 3: Cross multiply
    8,690,666.20x = 13,035,999.30 × 5,478,400.60
  4. Step 4: Simplify right side
    8,690,666.20x = 71,416,426,386,719.58
  5. Step 5: Solve for x
    x = 71,416,426,386,719.58/8,690,666.20
  6. Step 6: Final answer
    x = 8,217,600.90

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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.