Home / 812,269.16-1,218,009.02-407,287.38

Finding the Fourth Proportional to 812,269.16, 1,218,009.02 and 407,287.38

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Solution

The fourth proportional to 812,269.16, 1,218,009.02 and 407,287.38 is: 610,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,269.16 : 1,218,009.02 = 407,287.38 : x
  2. Step 2: Convert to fraction form
    812,269.16/1,218,009.02 = 407,287.38/x
  3. Step 3: Cross multiply
    812,269.16x = 1,218,009.02 × 407,287.38
  4. Step 4: Simplify right side
    812,269.16x = 496,079,702,572.17
  5. Step 5: Solve for x
    x = 496,079,702,572.17/812,269.16
  6. Step 6: Final answer
    x = 610,733.15

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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.