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Finding the Fourth Proportional to 664,435.20, 996,652.80 and 613,113.60

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Solution

The fourth proportional to 664,435.20, 996,652.80 and 613,113.60 is: 919,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,435.20 : 996,652.80 = 613,113.60 : x
  2. Step 2: Convert to fraction form
    664,435.20/996,652.80 = 613,113.60/x
  3. Step 3: Cross multiply
    664,435.20x = 996,652.80 × 613,113.60
  4. Step 4: Simplify right side
    664,435.20x = 611,061,386,158.08
  5. Step 5: Solve for x
    x = 611,061,386,158.08/664,435.20
  6. Step 6: Final answer
    x = 919,670.40

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Similar ratio
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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.