Home / 738,131.80-1,107,140.10-288,765.40

Finding the Fourth Proportional to 738,131.80, 1,107,140.10 and 288,765.40

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Solution

The fourth proportional to 738,131.80, 1,107,140.10 and 288,765.40 is: 433,125.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,131.80 : 1,107,140.10 = 288,765.40 : x
  2. Step 2: Convert to fraction form
    738,131.80/1,107,140.10 = 288,765.40/x
  3. Step 3: Cross multiply
    738,131.80x = 1,107,140.10 × 288,765.40
  4. Step 4: Simplify right side
    738,131.80x = 319,703,753,832.54
  5. Step 5: Solve for x
    x = 319,703,753,832.54/738,131.80
  6. Step 6: Final answer
    x = 433,125.57

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1.5x scale

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.