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Finding the Fourth Proportional to 661,648.40, 992,472.60 and 483,318.80

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Solution

The fourth proportional to 661,648.40, 992,472.60 and 483,318.80 is: 724,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,648.40 : 992,472.60 = 483,318.80 : x
  2. Step 2: Convert to fraction form
    661,648.40/992,472.60 = 483,318.80/x
  3. Step 3: Cross multiply
    661,648.40x = 992,472.60 × 483,318.80
  4. Step 4: Simplify right side
    661,648.40x = 479,680,666,064.88
  5. Step 5: Solve for x
    x = 479,680,666,064.88/661,648.40
  6. Step 6: Final answer
    x = 724,978.20

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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.