Home / 688,287.46-949,805.85-382,385.29

Finding the Fourth Proportional to 688,287.46, 949,805.85 and 382,385.29

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Solution

The fourth proportional to 688,287.46, 949,805.85 and 382,385.29 is: 527,674.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,287.46 : 949,805.85 = 382,385.29 : x
  2. Step 2: Convert to fraction form
    688,287.46/949,805.85 = 382,385.29/x
  3. Step 3: Cross multiply
    688,287.46x = 949,805.85 × 382,385.29
  4. Step 4: Simplify right side
    688,287.46x = 363,191,785,395.95
  5. Step 5: Solve for x
    x = 363,191,785,395.95/688,287.46
  6. Step 6: Final answer
    x = 527,674.56

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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.