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Finding the Fourth Proportional to 688,287.48, 949,805.84 and 382,385.28

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Solution

The fourth proportional to 688,287.48, 949,805.84 and 382,385.28 is: 527,674.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,287.48 : 949,805.84 = 382,385.28 : x
  2. Step 2: Convert to fraction form
    688,287.48/949,805.84 = 382,385.28/x
  3. Step 3: Cross multiply
    688,287.48x = 949,805.84 × 382,385.28
  4. Step 4: Simplify right side
    688,287.48x = 363,191,772,074.04
  5. Step 5: Solve for x
    x = 363,191,772,074.04/688,287.48
  6. Step 6: Final answer
    x = 527,674.53

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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.