Home / 648,614.20-972,921.30-449,159.80

Finding the Fourth Proportional to 648,614.20, 972,921.30 and 449,159.80

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Solution

The fourth proportional to 648,614.20, 972,921.30 and 449,159.80 is: 673,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,614.20 : 972,921.30 = 449,159.80 : x
  2. Step 2: Convert to fraction form
    648,614.20/972,921.30 = 449,159.80/x
  3. Step 3: Cross multiply
    648,614.20x = 972,921.30 × 449,159.80
  4. Step 4: Simplify right side
    648,614.20x = 436,997,136,523.74
  5. Step 5: Solve for x
    x = 436,997,136,523.74/648,614.20
  6. Step 6: Final answer
    x = 673,739.70

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1.5x scale

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.