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Finding the Fourth Proportional to 485,411.10, 728,116.65 and 434,672.70

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Solution

The fourth proportional to 485,411.10, 728,116.65 and 434,672.70 is: 652,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,411.10 : 728,116.65 = 434,672.70 : x
  2. Step 2: Convert to fraction form
    485,411.10/728,116.65 = 434,672.70/x
  3. Step 3: Cross multiply
    485,411.10x = 728,116.65 × 434,672.70
  4. Step 4: Simplify right side
    485,411.10x = 316,492,430,170.46
  5. Step 5: Solve for x
    x = 316,492,430,170.46/485,411.10
  6. Step 6: Final answer
    x = 652,009.05

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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.