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Finding the Fourth Proportional to 661,830.72, 913,327.20 and 360,024

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Solution

The fourth proportional to 661,830.72, 913,327.20 and 360,024 is: 496,833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,830.72 : 913,327.20 = 360,024 : x
  2. Step 2: Convert to fraction form
    661,830.72/913,327.20 = 360,024/x
  3. Step 3: Cross multiply
    661,830.72x = 913,327.20 × 360,024
  4. Step 4: Simplify right side
    661,830.72x = 328,819,711,852.80
  5. Step 5: Solve for x
    x = 328,819,711,852.80/661,830.72
  6. Step 6: Final answer
    x = 496,833.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.