Home / 787,816.40-1,182,016.20-314,841.20

Finding the Fourth Proportional to 787,816.40, 1,182,016.20 and 314,841.20

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Solution

The fourth proportional to 787,816.40, 1,182,016.20 and 314,841.20 is: 472,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,816.40 : 1,182,016.20 = 314,841.20 : x
  2. Step 2: Convert to fraction form
    787,816.40/1,182,016.20 = 314,841.20/x
  3. Step 3: Cross multiply
    787,816.40x = 1,182,016.20 × 314,841.20
  4. Step 4: Simplify right side
    787,816.40x = 372,147,398,827.44
  5. Step 5: Solve for x
    x = 372,147,398,827.44/787,816.40
  6. Step 6: Final answer
    x = 472,378.33

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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.