Home / 721,831.13-996,389.82-420,025.13

Finding the Fourth Proportional to 721,831.13, 996,389.82 and 420,025.13

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Solution

The fourth proportional to 721,831.13, 996,389.82 and 420,025.13 is: 579,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,831.13 : 996,389.82 = 420,025.13 : x
  2. Step 2: Convert to fraction form
    721,831.13/996,389.82 = 420,025.13/x
  3. Step 3: Cross multiply
    721,831.13x = 996,389.82 × 420,025.13
  4. Step 4: Simplify right side
    721,831.13x = 418,508,763,676.18
  5. Step 5: Solve for x
    x = 418,508,763,676.18/721,831.13
  6. Step 6: Final answer
    x = 579,787.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.