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Finding the Fourth Proportional to 490,695.30, 736,042.95 and 455,265.90

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Solution

The fourth proportional to 490,695.30, 736,042.95 and 455,265.90 is: 682,898.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,695.30 : 736,042.95 = 455,265.90 : x
  2. Step 2: Convert to fraction form
    490,695.30/736,042.95 = 455,265.90/x
  3. Step 3: Cross multiply
    490,695.30x = 736,042.95 × 455,265.90
  4. Step 4: Simplify right side
    490,695.30x = 335,095,256,070.41
  5. Step 5: Solve for x
    x = 335,095,256,070.41/490,695.30
  6. Step 6: Final answer
    x = 682,898.85

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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.