Home / 991,724.40-1,487,805.30-317,836.80

Finding the Fourth Proportional to 991,724.40, 1,487,805.30 and 317,836.80

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Solution

The fourth proportional to 991,724.40, 1,487,805.30 and 317,836.80 is: 476,825.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,724.40 : 1,487,805.30 = 317,836.80 : x
  2. Step 2: Convert to fraction form
    991,724.40/1,487,805.30 = 317,836.80/x
  3. Step 3: Cross multiply
    991,724.40x = 1,487,805.30 × 317,836.80
  4. Step 4: Simplify right side
    991,724.40x = 472,879,275,575.04
  5. Step 5: Solve for x
    x = 472,879,275,575.04/991,724.40
  6. Step 6: Final answer
    x = 476,825.29

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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.