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Finding the Fourth Proportional to 490,693.30, 736,039.95 and 455,263.90

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Solution

The fourth proportional to 490,693.30, 736,039.95 and 455,263.90 is: 682,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,693.30 : 736,039.95 = 455,263.90 : x
  2. Step 2: Convert to fraction form
    490,693.30/736,039.95 = 455,263.90/x
  3. Step 3: Cross multiply
    490,693.30x = 736,039.95 × 455,263.90
  4. Step 4: Simplify right side
    490,693.30x = 335,092,418,192.81
  5. Step 5: Solve for x
    x = 335,092,418,192.81/490,693.30
  6. Step 6: Final answer
    x = 682,895.85

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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.