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Finding the Fourth Proportional to 485,715.40, 728,573.10 and 476,384.20

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Solution

The fourth proportional to 485,715.40, 728,573.10 and 476,384.20 is: 714,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,715.40 : 728,573.10 = 476,384.20 : x
  2. Step 2: Convert to fraction form
    485,715.40/728,573.10 = 476,384.20/x
  3. Step 3: Cross multiply
    485,715.40x = 728,573.10 × 476,384.20
  4. Step 4: Simplify right side
    485,715.40x = 347,080,713,385.02
  5. Step 5: Solve for x
    x = 347,080,713,385.02/485,715.40
  6. Step 6: Final answer
    x = 714,576.30

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Similar ratio
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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.