Home / 514,427.10-771,640.65-140,450.10

Finding the Fourth Proportional to 514,427.10, 771,640.65 and 140,450.10

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Solution

The fourth proportional to 514,427.10, 771,640.65 and 140,450.10 is: 210,675.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,427.10 : 771,640.65 = 140,450.10 : x
  2. Step 2: Convert to fraction form
    514,427.10/771,640.65 = 140,450.10/x
  3. Step 3: Cross multiply
    514,427.10x = 771,640.65 × 140,450.10
  4. Step 4: Simplify right side
    514,427.10x = 108,377,006,456.57
  5. Step 5: Solve for x
    x = 108,377,006,456.57/514,427.10
  6. Step 6: Final answer
    x = 210,675.15

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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.