Home / 738,121.80-1,107,125.10-288,755.40

Finding the Fourth Proportional to 738,121.80, 1,107,125.10 and 288,755.40

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Solution

The fourth proportional to 738,121.80, 1,107,125.10 and 288,755.40 is: 433,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,121.80 : 1,107,125.10 = 288,755.40 : x
  2. Step 2: Convert to fraction form
    738,121.80/1,107,125.10 = 288,755.40/x
  3. Step 3: Cross multiply
    738,121.80x = 1,107,125.10 × 288,755.40
  4. Step 4: Simplify right side
    738,121.80x = 319,688,351,100.54
  5. Step 5: Solve for x
    x = 319,688,351,100.54/738,121.80
  6. Step 6: Final answer
    x = 433,110.57

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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.