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Finding the Fourth Proportional to 485,713.40, 728,570.10 and 476,382.20

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Solution

The fourth proportional to 485,713.40, 728,570.10 and 476,382.20 is: 714,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,713.40 : 728,570.10 = 476,382.20 : x
  2. Step 2: Convert to fraction form
    485,713.40/728,570.10 = 476,382.20/x
  3. Step 3: Cross multiply
    485,713.40x = 728,570.10 × 476,382.20
  4. Step 4: Simplify right side
    485,713.40x = 347,077,827,092.22
  5. Step 5: Solve for x
    x = 347,077,827,092.22/485,713.40
  6. Step 6: Final answer
    x = 714,573.30

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Similar ratio
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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.