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Finding the Fourth Proportional to 688,073.28, 949,534.56 and 386,265.12

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Solution

The fourth proportional to 688,073.28, 949,534.56 and 386,265.12 is: 533,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,073.28 : 949,534.56 = 386,265.12 : x
  2. Step 2: Convert to fraction form
    688,073.28/949,534.56 = 386,265.12/x
  3. Step 3: Cross multiply
    688,073.28x = 949,534.56 × 386,265.12
  4. Step 4: Simplify right side
    688,073.28x = 366,772,080,762.55
  5. Step 5: Solve for x
    x = 366,772,080,762.55/688,073.28
  6. Step 6: Final answer
    x = 533,042.18

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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.