Home / 487,288.30-730,823.10-319,982.80

Finding the Fourth Proportional to 487,288.30, 730,823.10 and 319,982.80

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Solution

The fourth proportional to 487,288.30, 730,823.10 and 319,982.80 is: 479,902.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,288.30 : 730,823.10 = 319,982.80 : x
  2. Step 2: Convert to fraction form
    487,288.30/730,823.10 = 319,982.80/x
  3. Step 3: Cross multiply
    487,288.30x = 730,823.10 × 319,982.80
  4. Step 4: Simplify right side
    487,288.30x = 233,850,821,842.68
  5. Step 5: Solve for x
    x = 233,850,821,842.68/487,288.30
  6. Step 6: Final answer
    x = 479,902.39

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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.