Home / 989,175.30-1,482,987.82-390,584.51

Finding the Fourth Proportional to 989,175.30, 1,482,987.82 and 390,584.51

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Solution

The fourth proportional to 989,175.30, 1,482,987.82 and 390,584.51 is: 585,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,175.30 : 1,482,987.82 = 390,584.51 : x
  2. Step 2: Convert to fraction form
    989,175.30/1,482,987.82 = 390,584.51/x
  3. Step 3: Cross multiply
    989,175.30x = 1,482,987.82 × 390,584.51
  4. Step 4: Simplify right side
    989,175.30x = 579,232,071,010.67
  5. Step 5: Solve for x
    x = 579,232,071,010.67/989,175.30
  6. Step 6: Final answer
    x = 585,570.70

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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.