Home / 804,875.20-1,207,312.80-486,010.60

Finding the Fourth Proportional to 804,875.20, 1,207,312.80 and 486,010.60

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Solution

The fourth proportional to 804,875.20, 1,207,312.80 and 486,010.60 is: 729,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,875.20 : 1,207,312.80 = 486,010.60 : x
  2. Step 2: Convert to fraction form
    804,875.20/1,207,312.80 = 486,010.60/x
  3. Step 3: Cross multiply
    804,875.20x = 1,207,312.80 × 486,010.60
  4. Step 4: Simplify right side
    804,875.20x = 586,766,818,315.68
  5. Step 5: Solve for x
    x = 586,766,818,315.68/804,875.20
  6. Step 6: Final answer
    x = 729,015.90

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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.