Home / 566,235.20-781,372.10-311,586.39

Finding the Fourth Proportional to 566,235.20, 781,372.10 and 311,586.39

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Solution

The fourth proportional to 566,235.20, 781,372.10 and 311,586.39 is: 429,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,235.20 : 781,372.10 = 311,586.39 : x
  2. Step 2: Convert to fraction form
    566,235.20/781,372.10 = 311,586.39/x
  3. Step 3: Cross multiply
    566,235.20x = 781,372.10 × 311,586.39
  4. Step 4: Simplify right side
    566,235.20x = 243,464,912,664.69
  5. Step 5: Solve for x
    x = 243,464,912,664.69/566,235.20
  6. Step 6: Final answer
    x = 429,971.35

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.