Home / 871,497.60-1,307,246.40-399,105.60

Finding the Fourth Proportional to 871,497.60, 1,307,246.40 and 399,105.60

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Solution

The fourth proportional to 871,497.60, 1,307,246.40 and 399,105.60 is: 598,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,497.60 : 1,307,246.40 = 399,105.60 : x
  2. Step 2: Convert to fraction form
    871,497.60/1,307,246.40 = 399,105.60/x
  3. Step 3: Cross multiply
    871,497.60x = 1,307,246.40 × 399,105.60
  4. Step 4: Simplify right side
    871,497.60x = 521,729,358,819.84
  5. Step 5: Solve for x
    x = 521,729,358,819.84/871,497.60
  6. Step 6: Final answer
    x = 598,658.40

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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.