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Finding the Fourth Proportional to 661,270.10, 912,561.81 and 359,470.58

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Solution

The fourth proportional to 661,270.10, 912,561.81 and 359,470.58 is: 496,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,270.10 : 912,561.81 = 359,470.58 : x
  2. Step 2: Convert to fraction form
    661,270.10/912,561.81 = 359,470.58/x
  3. Step 3: Cross multiply
    661,270.10x = 912,561.81 × 359,470.58
  4. Step 4: Simplify right side
    661,270.10x = 328,039,123,126.55
  5. Step 5: Solve for x
    x = 328,039,123,126.55/661,270.10
  6. Step 6: Final answer
    x = 496,074.33

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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.