Home / 804,990.80-1,207,486.20-490,062.80

Finding the Fourth Proportional to 804,990.80, 1,207,486.20 and 490,062.80

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Solution

The fourth proportional to 804,990.80, 1,207,486.20 and 490,062.80 is: 735,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,990.80 : 1,207,486.20 = 490,062.80 : x
  2. Step 2: Convert to fraction form
    804,990.80/1,207,486.20 = 490,062.80/x
  3. Step 3: Cross multiply
    804,990.80x = 1,207,486.20 × 490,062.80
  4. Step 4: Simplify right side
    804,990.80x = 591,744,068,133.36
  5. Step 5: Solve for x
    x = 591,744,068,133.36/804,990.80
  6. Step 6: Final answer
    x = 735,094.20

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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.