Home / 812,077.80-1,218,116.70-497,149.80

Finding the Fourth Proportional to 812,077.80, 1,218,116.70 and 497,149.80

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Solution

The fourth proportional to 812,077.80, 1,218,116.70 and 497,149.80 is: 745,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,077.80 : 1,218,116.70 = 497,149.80 : x
  2. Step 2: Convert to fraction form
    812,077.80/1,218,116.70 = 497,149.80/x
  3. Step 3: Cross multiply
    812,077.80x = 1,218,116.70 × 497,149.80
  4. Step 4: Simplify right side
    812,077.80x = 605,586,473,781.66
  5. Step 5: Solve for x
    x = 605,586,473,781.66/812,077.80
  6. Step 6: Final answer
    x = 745,724.70

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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.