Home / 989,175.11-1,482,987.54-390,584.33

Finding the Fourth Proportional to 989,175.11, 1,482,987.54 and 390,584.33

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Solution

The fourth proportional to 989,175.11, 1,482,987.54 and 390,584.33 is: 585,570.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,175.11 : 1,482,987.54 = 390,584.33 : x
  2. Step 2: Convert to fraction form
    989,175.11/1,482,987.54 = 390,584.33/x
  3. Step 3: Cross multiply
    989,175.11x = 1,482,987.54 × 390,584.33
  4. Step 4: Simplify right side
    989,175.11x = 579,231,687,294.31
  5. Step 5: Solve for x
    x = 579,231,687,294.31/989,175.11
  6. Step 6: Final answer
    x = 585,570.42

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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.