Home / 476,821.22-658,185.92-315,728.15

Finding the Fourth Proportional to 476,821.22, 658,185.92 and 315,728.15

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Solution

The fourth proportional to 476,821.22, 658,185.92 and 315,728.15 is: 435,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,821.22 : 658,185.92 = 315,728.15 : x
  2. Step 2: Convert to fraction form
    476,821.22/658,185.92 = 315,728.15/x
  3. Step 3: Cross multiply
    476,821.22x = 658,185.92 × 315,728.15
  4. Step 4: Simplify right side
    476,821.22x = 207,807,819,192.06
  5. Step 5: Solve for x
    x = 207,807,819,192.06/476,821.22
  6. Step 6: Final answer
    x = 435,819.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.