Home / 865,621.31-1,194,619.21-478,428.44

Finding the Fourth Proportional to 865,621.31, 1,194,619.21 and 478,428.44

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Solution

The fourth proportional to 865,621.31, 1,194,619.21 and 478,428.44 is: 660,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,621.31 : 1,194,619.21 = 478,428.44 : x
  2. Step 2: Convert to fraction form
    865,621.31/1,194,619.21 = 478,428.44/x
  3. Step 3: Cross multiply
    865,621.31x = 1,194,619.21 × 478,428.44
  4. Step 4: Simplify right side
    865,621.31x = 571,539,797,865.17
  5. Step 5: Solve for x
    x = 571,539,797,865.17/865,621.31
  6. Step 6: Final answer
    x = 660,265.40

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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.