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Finding the Fourth Proportional to 490,740.34, 736,117.80 and 323,332.78

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Solution

The fourth proportional to 490,740.34, 736,117.80 and 323,332.78 is: 485,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,740.34 : 736,117.80 = 323,332.78 : x
  2. Step 2: Convert to fraction form
    490,740.34/736,117.80 = 323,332.78/x
  3. Step 3: Cross multiply
    490,740.34x = 736,117.80 × 323,332.78
  4. Step 4: Simplify right side
    490,740.34x = 238,011,014,681.48
  5. Step 5: Solve for x
    x = 238,011,014,681.48/490,740.34
  6. Step 6: Final answer
    x = 485,003.97

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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.