Home / 893,728.80-1,339,837.92-387,907.20

Finding the Fourth Proportional to 893,728.80, 1,339,837.92 and 387,907.20

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Solution

The fourth proportional to 893,728.80, 1,339,837.92 and 387,907.20 is: 581,532.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,728.80 : 1,339,837.92 = 387,907.20 : x
  2. Step 2: Convert to fraction form
    893,728.80/1,339,837.92 = 387,907.20/x
  3. Step 3: Cross multiply
    893,728.80x = 1,339,837.92 × 387,907.20
  4. Step 4: Simplify right side
    893,728.80x = 519,732,776,001.02
  5. Step 5: Solve for x
    x = 519,732,776,001.02/893,728.80
  6. Step 6: Final answer
    x = 581,532.98

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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.