Home / 558,975.80-838,463.70-509,112.20

Finding the Fourth Proportional to 558,975.80, 838,463.70 and 509,112.20

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Solution

The fourth proportional to 558,975.80, 838,463.70 and 509,112.20 is: 763,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,975.80 : 838,463.70 = 509,112.20 : x
  2. Step 2: Convert to fraction form
    558,975.80/838,463.70 = 509,112.20/x
  3. Step 3: Cross multiply
    558,975.80x = 838,463.70 × 509,112.20
  4. Step 4: Simplify right side
    558,975.80x = 426,872,098,927.14
  5. Step 5: Solve for x
    x = 426,872,098,927.14/558,975.80
  6. Step 6: Final answer
    x = 763,668.30

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Double scale
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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.