Home / 813,928.74-1,122,987.69-469,737.06

Finding the Fourth Proportional to 813,928.74, 1,122,987.69 and 469,737.06

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Solution

The fourth proportional to 813,928.74, 1,122,987.69 and 469,737.06 is: 648,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,928.74 : 1,122,987.69 = 469,737.06 : x
  2. Step 2: Convert to fraction form
    813,928.74/1,122,987.69 = 469,737.06/x
  3. Step 3: Cross multiply
    813,928.74x = 1,122,987.69 × 469,737.06
  4. Step 4: Simplify right side
    813,928.74x = 527,508,935,916.79
  5. Step 5: Solve for x
    x = 527,508,935,916.79/813,928.74
  6. Step 6: Final answer
    x = 648,102.11

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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.