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Finding the Fourth Proportional to 688,696.75, 950,225.01 and 402,052.12

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Solution

The fourth proportional to 688,696.75, 950,225.01 and 402,052.12 is: 554,728.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,696.75 : 950,225.01 = 402,052.12 : x
  2. Step 2: Convert to fraction form
    688,696.75/950,225.01 = 402,052.12/x
  3. Step 3: Cross multiply
    688,696.75x = 950,225.01 × 402,052.12
  4. Step 4: Simplify right side
    688,696.75x = 382,039,979,747.52
  5. Step 5: Solve for x
    x = 382,039,979,747.52/688,696.75
  6. Step 6: Final answer
    x = 554,728.88

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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.