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Finding the Fourth Proportional to 558,754.30, 838,131.45 and 402,456.70

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Solution

The fourth proportional to 558,754.30, 838,131.45 and 402,456.70 is: 603,685.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,754.30 : 838,131.45 = 402,456.70 : x
  2. Step 2: Convert to fraction form
    558,754.30/838,131.45 = 402,456.70/x
  3. Step 3: Cross multiply
    558,754.30x = 838,131.45 × 402,456.70
  4. Step 4: Simplify right side
    558,754.30x = 337,311,617,533.22
  5. Step 5: Solve for x
    x = 337,311,617,533.22/558,754.30
  6. Step 6: Final answer
    x = 603,685.05

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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.