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Finding the Fourth Proportional to 663,200.47, 915,217.82 and 361,394.47

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Solution

The fourth proportional to 663,200.47, 915,217.82 and 361,394.47 is: 498,725.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,200.47 : 915,217.82 = 361,394.47 : x
  2. Step 2: Convert to fraction form
    663,200.47/915,217.82 = 361,394.47/x
  3. Step 3: Cross multiply
    663,200.47x = 915,217.82 × 361,394.47
  4. Step 4: Simplify right side
    663,200.47x = 330,754,657,186.48
  5. Step 5: Solve for x
    x = 330,754,657,186.48/663,200.47
  6. Step 6: Final answer
    x = 498,725.00

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1.5x scale

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.