Home / 821,742.89-1,232,894.57-442,702.53

Finding the Fourth Proportional to 821,742.89, 1,232,894.57 and 442,702.53

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Solution

The fourth proportional to 821,742.89, 1,232,894.57 and 442,702.53 is: 664,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,742.89 : 1,232,894.57 = 442,702.53 : x
  2. Step 2: Convert to fraction form
    821,742.89/1,232,894.57 = 442,702.53/x
  3. Step 3: Cross multiply
    821,742.89x = 1,232,894.57 × 442,702.53
  4. Step 4: Simplify right side
    821,742.89x = 545,805,543,148.75
  5. Step 5: Solve for x
    x = 545,805,543,148.75/821,742.89
  6. Step 6: Final answer
    x = 664,204.77

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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.