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Finding the Fourth Proportional to 688,615.28, 950,287.56 and 382,690.64

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Solution

The fourth proportional to 688,615.28, 950,287.56 and 382,690.64 is: 528,112.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,615.28 : 950,287.56 = 382,690.64 : x
  2. Step 2: Convert to fraction form
    688,615.28/950,287.56 = 382,690.64/x
  3. Step 3: Cross multiply
    688,615.28x = 950,287.56 × 382,690.64
  4. Step 4: Simplify right side
    688,615.28x = 363,666,154,520.44
  5. Step 5: Solve for x
    x = 363,666,154,520.44/688,615.28
  6. Step 6: Final answer
    x = 528,112.23

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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.