Home / 389,934.60-584,901.90-353,776.20

Finding the Fourth Proportional to 389,934.60, 584,901.90 and 353,776.20

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Solution

The fourth proportional to 389,934.60, 584,901.90 and 353,776.20 is: 530,664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,934.60 : 584,901.90 = 353,776.20 : x
  2. Step 2: Convert to fraction form
    389,934.60/584,901.90 = 353,776.20/x
  3. Step 3: Cross multiply
    389,934.60x = 584,901.90 × 353,776.20
  4. Step 4: Simplify right side
    389,934.60x = 206,924,371,554.78
  5. Step 5: Solve for x
    x = 206,924,371,554.78/389,934.60
  6. Step 6: Final answer
    x = 530,664.30

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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.