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Finding the Fourth Proportional to 875,229.20, 1,312,843.80 and 744,009.20

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Solution

The fourth proportional to 875,229.20, 1,312,843.80 and 744,009.20 is: 1,116,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,229.20 : 1,312,843.80 = 744,009.20 : x
  2. Step 2: Convert to fraction form
    875,229.20/1,312,843.80 = 744,009.20/x
  3. Step 3: Cross multiply
    875,229.20x = 1,312,843.80 × 744,009.20
  4. Step 4: Simplify right side
    875,229.20x = 976,767,865,362.96
  5. Step 5: Solve for x
    x = 976,767,865,362.96/875,229.20
  6. Step 6: Final answer
    x = 1,116,013.80

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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.