Home / 813,637.17-1,220,008.64-646,229.61

Finding the Fourth Proportional to 813,637.17, 1,220,008.64 and 646,229.61

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Solution

The fourth proportional to 813,637.17, 1,220,008.64 and 646,229.61 is: 968,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,637.17 : 1,220,008.64 = 646,229.61 : x
  2. Step 2: Convert to fraction form
    813,637.17/1,220,008.64 = 646,229.61/x
  3. Step 3: Cross multiply
    813,637.17x = 1,220,008.64 × 646,229.61
  4. Step 4: Simplify right side
    813,637.17x = 788,405,704,392.68
  5. Step 5: Solve for x
    x = 788,405,704,392.68/813,637.17
  6. Step 6: Final answer
    x = 968,989.29

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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.