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Finding the Fourth Proportional to 561,943.80, 842,915.70 and 325,747.80

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Solution

The fourth proportional to 561,943.80, 842,915.70 and 325,747.80 is: 488,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,943.80 : 842,915.70 = 325,747.80 : x
  2. Step 2: Convert to fraction form
    561,943.80/842,915.70 = 325,747.80/x
  3. Step 3: Cross multiply
    561,943.80x = 842,915.70 × 325,747.80
  4. Step 4: Simplify right side
    561,943.80x = 274,577,934,860.46
  5. Step 5: Solve for x
    x = 274,577,934,860.46/561,943.80
  6. Step 6: Final answer
    x = 488,621.70

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Similar ratio
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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.