Home / 1,123,820.60-1,685,730.90-325,128.20

Finding the Fourth Proportional to 1,123,820.60, 1,685,730.90 and 325,128.20

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Solution

The fourth proportional to 1,123,820.60, 1,685,730.90 and 325,128.20 is: 487,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,820.60 : 1,685,730.90 = 325,128.20 : x
  2. Step 2: Convert to fraction form
    1,123,820.60/1,685,730.90 = 325,128.20/x
  3. Step 3: Cross multiply
    1,123,820.60x = 1,685,730.90 × 325,128.20
  4. Step 4: Simplify right side
    1,123,820.60x = 548,078,653,201.38
  5. Step 5: Solve for x
    x = 548,078,653,201.38/1,123,820.60
  6. Step 6: Final answer
    x = 487,692.30

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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.