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Finding the Fourth Proportional to 688,282.57, 949,830.96 and 382,350.63

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Solution

The fourth proportional to 688,282.57, 949,830.96 and 382,350.63 is: 527,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,282.57 : 949,830.96 = 382,350.63 : x
  2. Step 2: Convert to fraction form
    688,282.57/949,830.96 = 382,350.63/x
  3. Step 3: Cross multiply
    688,282.57x = 949,830.96 × 382,350.63
  4. Step 4: Simplify right side
    688,282.57x = 363,168,463,451.66
  5. Step 5: Solve for x
    x = 363,168,463,451.66/688,282.57
  6. Step 6: Final answer
    x = 527,644.43

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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.