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Finding the Fourth Proportional to 457,456.20, 686,573.10 and 368,809.80

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Solution

The fourth proportional to 457,456.20, 686,573.10 and 368,809.80 is: 553,528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,456.20 : 686,573.10 = 368,809.80 : x
  2. Step 2: Convert to fraction form
    457,456.20/686,573.10 = 368,809.80/x
  3. Step 3: Cross multiply
    457,456.20x = 686,573.10 × 368,809.80
  4. Step 4: Simplify right side
    457,456.20x = 253,214,887,696.38
  5. Step 5: Solve for x
    x = 253,214,887,696.38/457,456.20
  6. Step 6: Final answer
    x = 553,528.16

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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.