Home / 783,276-1,080,921.96-443,767.20

Finding the Fourth Proportional to 783,276, 1,080,921.96 and 443,767.20

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Solution

The fourth proportional to 783,276, 1,080,921.96 and 443,767.20 is: 612,399.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,276 : 1,080,921.96 = 443,767.20 : x
  2. Step 2: Convert to fraction form
    783,276/1,080,921.96 = 443,767.20/x
  3. Step 3: Cross multiply
    783,276x = 1,080,921.96 × 443,767.20
  4. Step 4: Simplify right side
    783,276x = 479,677,711,607.71
  5. Step 5: Solve for x
    x = 479,677,711,607.71/783,276
  6. Step 6: Final answer
    x = 612,399.35

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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.