Home / 805,010.30-1,207,515.45-490,082.30

Finding the Fourth Proportional to 805,010.30, 1,207,515.45 and 490,082.30

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Solution

The fourth proportional to 805,010.30, 1,207,515.45 and 490,082.30 is: 735,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,010.30 : 1,207,515.45 = 490,082.30 : x
  2. Step 2: Convert to fraction form
    805,010.30/1,207,515.45 = 490,082.30/x
  3. Step 3: Cross multiply
    805,010.30x = 1,207,515.45 × 490,082.30
  4. Step 4: Simplify right side
    805,010.30x = 591,781,949,021.54
  5. Step 5: Solve for x
    x = 591,781,949,021.54/805,010.30
  6. Step 6: Final answer
    x = 735,123.45

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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.