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Finding the Fourth Proportional to 490,861.70, 736,292.55 and 402,215.30

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Solution

The fourth proportional to 490,861.70, 736,292.55 and 402,215.30 is: 603,322.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,861.70 : 736,292.55 = 402,215.30 : x
  2. Step 2: Convert to fraction form
    490,861.70/736,292.55 = 402,215.30/x
  3. Step 3: Cross multiply
    490,861.70x = 736,292.55 × 402,215.30
  4. Step 4: Simplify right side
    490,861.70x = 296,148,128,886.02
  5. Step 5: Solve for x
    x = 296,148,128,886.02/490,861.70
  6. Step 6: Final answer
    x = 603,322.95

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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.