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Finding the Fourth Proportional to 688,988.48, 950,891.52 and 387,182.24

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Solution

The fourth proportional to 688,988.48, 950,891.52 and 387,182.24 is: 534,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,988.48 : 950,891.52 = 387,182.24 : x
  2. Step 2: Convert to fraction form
    688,988.48/950,891.52 = 387,182.24/x
  3. Step 3: Cross multiply
    688,988.48x = 950,891.52 × 387,182.24
  4. Step 4: Simplify right side
    688,988.48x = 368,168,308,710.61
  5. Step 5: Solve for x
    x = 368,168,308,710.61/688,988.48
  6. Step 6: Final answer
    x = 534,360.62

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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.