Home / 893,729.80-1,339,839.42-387,908.20

Finding the Fourth Proportional to 893,729.80, 1,339,839.42 and 387,908.20

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Solution

The fourth proportional to 893,729.80, 1,339,839.42 and 387,908.20 is: 581,534.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,729.80 : 1,339,839.42 = 387,908.20 : x
  2. Step 2: Convert to fraction form
    893,729.80/1,339,839.42 = 387,908.20/x
  3. Step 3: Cross multiply
    893,729.80x = 1,339,839.42 × 387,908.20
  4. Step 4: Simplify right side
    893,729.80x = 519,734,697,701.24
  5. Step 5: Solve for x
    x = 519,734,697,701.24/893,729.80
  6. Step 6: Final answer
    x = 581,534.48

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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.