Home / 1,036,748.80-1,555,123.20-438,385.60

Finding the Fourth Proportional to 1,036,748.80, 1,555,123.20 and 438,385.60

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Solution

The fourth proportional to 1,036,748.80, 1,555,123.20 and 438,385.60 is: 657,578.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,748.80 : 1,555,123.20 = 438,385.60 : x
  2. Step 2: Convert to fraction form
    1,036,748.80/1,555,123.20 = 438,385.60/x
  3. Step 3: Cross multiply
    1,036,748.80x = 1,555,123.20 × 438,385.60
  4. Step 4: Simplify right side
    1,036,748.80x = 681,743,617,105.92
  5. Step 5: Solve for x
    x = 681,743,617,105.92/1,036,748.80
  6. Step 6: Final answer
    x = 657,578.40

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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.