Home / 919,314.40-1,378,971.60-288,227.20

Finding the Fourth Proportional to 919,314.40, 1,378,971.60 and 288,227.20

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Solution

The fourth proportional to 919,314.40, 1,378,971.60 and 288,227.20 is: 432,340.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,314.40 : 1,378,971.60 = 288,227.20 : x
  2. Step 2: Convert to fraction form
    919,314.40/1,378,971.60 = 288,227.20/x
  3. Step 3: Cross multiply
    919,314.40x = 1,378,971.60 × 288,227.20
  4. Step 4: Simplify right side
    919,314.40x = 397,457,123,147.52
  5. Step 5: Solve for x
    x = 397,457,123,147.52/919,314.40
  6. Step 6: Final answer
    x = 432,340.80

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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.