Home / 1,123,411.80-1,685,117.70-324,719.40

Finding the Fourth Proportional to 1,123,411.80, 1,685,117.70 and 324,719.40

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Solution

The fourth proportional to 1,123,411.80, 1,685,117.70 and 324,719.40 is: 487,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,411.80 : 1,685,117.70 = 324,719.40 : x
  2. Step 2: Convert to fraction form
    1,123,411.80/1,685,117.70 = 324,719.40/x
  3. Step 3: Cross multiply
    1,123,411.80x = 1,685,117.70 × 324,719.40
  4. Step 4: Simplify right side
    1,123,411.80x = 547,190,408,473.38
  5. Step 5: Solve for x
    x = 547,190,408,473.38/1,123,411.80
  6. Step 6: Final answer
    x = 487,079.10

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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.