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Finding the Fourth Proportional to 561,434.40, 840,839.40 and 550,159.20

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Solution

The fourth proportional to 561,434.40, 840,839.40 and 550,159.20 is: 823,952.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,434.40 : 840,839.40 = 550,159.20 : x
  2. Step 2: Convert to fraction form
    561,434.40/840,839.40 = 550,159.20/x
  3. Step 3: Cross multiply
    561,434.40x = 840,839.40 × 550,159.20
  4. Step 4: Simplify right side
    561,434.40x = 462,595,531,632.48
  5. Step 5: Solve for x
    x = 462,595,531,632.48/561,434.40
  6. Step 6: Final answer
    x = 823,952.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.