Home / 558,979.60-838,469.40-519,613.60

Finding the Fourth Proportional to 558,979.60, 838,469.40 and 519,613.60

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Solution

The fourth proportional to 558,979.60, 838,469.40 and 519,613.60 is: 779,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,979.60 : 838,469.40 = 519,613.60 : x
  2. Step 2: Convert to fraction form
    558,979.60/838,469.40 = 519,613.60/x
  3. Step 3: Cross multiply
    558,979.60x = 838,469.40 × 519,613.60
  4. Step 4: Simplify right side
    558,979.60x = 435,680,103,423.84
  5. Step 5: Solve for x
    x = 435,680,103,423.84/558,979.60
  6. Step 6: Final answer
    x = 779,420.40

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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.