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Finding the Fourth Proportional to 702,953.20, 1,053,652.20 and 387,636.40

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Solution

The fourth proportional to 702,953.20, 1,053,652.20 and 387,636.40 is: 581,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,953.20 : 1,053,652.20 = 387,636.40 : x
  2. Step 2: Convert to fraction form
    702,953.20/1,053,652.20 = 387,636.40/x
  3. Step 3: Cross multiply
    702,953.20x = 1,053,652.20 × 387,636.40
  4. Step 4: Simplify right side
    702,953.20x = 408,433,945,660.08
  5. Step 5: Solve for x
    x = 408,433,945,660.08/702,953.20
  6. Step 6: Final answer
    x = 581,025.80

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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.