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Finding the Fourth Proportional to 653,162.80, 901,463.04 and 398,661.88

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Solution

The fourth proportional to 653,162.80, 901,463.04 and 398,661.88 is: 550,213.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,162.80 : 901,463.04 = 398,661.88 : x
  2. Step 2: Convert to fraction form
    653,162.80/901,463.04 = 398,661.88/x
  3. Step 3: Cross multiply
    653,162.80x = 901,463.04 × 398,661.88
  4. Step 4: Simplify right side
    653,162.80x = 359,378,950,276.92
  5. Step 5: Solve for x
    x = 359,378,950,276.92/653,162.80
  6. Step 6: Final answer
    x = 550,213.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.