Home / 763,478.60-1,145,217.90-656,169.80

Finding the Fourth Proportional to 763,478.60, 1,145,217.90 and 656,169.80

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Solution

The fourth proportional to 763,478.60, 1,145,217.90 and 656,169.80 is: 984,254.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,478.60 : 1,145,217.90 = 656,169.80 : x
  2. Step 2: Convert to fraction form
    763,478.60/1,145,217.90 = 656,169.80/x
  3. Step 3: Cross multiply
    763,478.60x = 1,145,217.90 × 656,169.80
  4. Step 4: Simplify right side
    763,478.60x = 751,457,400,399.42
  5. Step 5: Solve for x
    x = 751,457,400,399.42/763,478.60
  6. Step 6: Final answer
    x = 984,254.70

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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.