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Finding the Fourth Proportional to 661,424.67, 912,764.84 and 359,617.95

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Solution

The fourth proportional to 661,424.67, 912,764.84 and 359,617.95 is: 496,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,424.67 : 912,764.84 = 359,617.95 : x
  2. Step 2: Convert to fraction form
    661,424.67/912,764.84 = 359,617.95/x
  3. Step 3: Cross multiply
    661,424.67x = 912,764.84 × 359,617.95
  4. Step 4: Simplify right side
    661,424.67x = 328,246,618,794.79
  5. Step 5: Solve for x
    x = 328,246,618,794.79/661,424.67
  6. Step 6: Final answer
    x = 496,272.11

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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.