Home / 1,112,521.40-1,667,615.70-438,342.20

Finding the Fourth Proportional to 1,112,521.40, 1,667,615.70 and 438,342.20

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Solution

The fourth proportional to 1,112,521.40, 1,667,615.70 and 438,342.20 is: 657,053.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,521.40 : 1,667,615.70 = 438,342.20 : x
  2. Step 2: Convert to fraction form
    1,112,521.40/1,667,615.70 = 438,342.20/x
  3. Step 3: Cross multiply
    1,112,521.40x = 1,667,615.70 × 438,342.20
  4. Step 4: Simplify right side
    1,112,521.40x = 730,986,334,692.54
  5. Step 5: Solve for x
    x = 730,986,334,692.54/1,112,521.40
  6. Step 6: Final answer
    x = 657,053.73

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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.