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Finding the Fourth Proportional to 688,057.92, 949,520.88 and 386,254.08

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Solution

The fourth proportional to 688,057.92, 949,520.88 and 386,254.08 is: 533,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,057.92 : 949,520.88 = 386,254.08 : x
  2. Step 2: Convert to fraction form
    688,057.92/949,520.88 = 386,254.08/x
  3. Step 3: Cross multiply
    688,057.92x = 949,520.88 × 386,254.08
  4. Step 4: Simplify right side
    688,057.92x = 366,756,313,945.19
  5. Step 5: Solve for x
    x = 366,756,313,945.19/688,057.92
  6. Step 6: Final answer
    x = 533,031.16

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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.