Home / 812,601.60-1,219,096.80-391,531.20

Finding the Fourth Proportional to 812,601.60, 1,219,096.80 and 391,531.20

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Solution

The fourth proportional to 812,601.60, 1,219,096.80 and 391,531.20 is: 587,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,601.60 : 1,219,096.80 = 391,531.20 : x
  2. Step 2: Convert to fraction form
    812,601.60/1,219,096.80 = 391,531.20/x
  3. Step 3: Cross multiply
    812,601.60x = 1,219,096.80 × 391,531.20
  4. Step 4: Simplify right side
    812,601.60x = 477,314,433,020.16
  5. Step 5: Solve for x
    x = 477,314,433,020.16/812,601.60
  6. Step 6: Final answer
    x = 587,390.47

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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.