Home / 921,876.39-1,381,560.71-542,971.35

Finding the Fourth Proportional to 921,876.39, 1,381,560.71 and 542,971.35

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Solution

The fourth proportional to 921,876.39, 1,381,560.71 and 542,971.35 is: 813,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,876.39 : 1,381,560.71 = 542,971.35 : x
  2. Step 2: Convert to fraction form
    921,876.39/1,381,560.71 = 542,971.35/x
  3. Step 3: Cross multiply
    921,876.39x = 1,381,560.71 × 542,971.35
  4. Step 4: Simplify right side
    921,876.39x = 750,147,881,100.80
  5. Step 5: Solve for x
    x = 750,147,881,100.80/921,876.39
  6. Step 6: Final answer
    x = 813,718.51

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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.