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Finding the Fourth Proportional to 661,382.91, 912,902.66 and 431,975.27

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Solution

The fourth proportional to 661,382.91, 912,902.66 and 431,975.27 is: 596,252.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,382.91 : 912,902.66 = 431,975.27 : x
  2. Step 2: Convert to fraction form
    661,382.91/912,902.66 = 431,975.27/x
  3. Step 3: Cross multiply
    661,382.91x = 912,902.66 × 431,975.27
  4. Step 4: Simplify right side
    661,382.91x = 394,351,366,312.83
  5. Step 5: Solve for x
    x = 394,351,366,312.83/661,382.91
  6. Step 6: Final answer
    x = 596,252.73

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1.5x scale

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.