Home / 865,621.18-1,194,619.04-478,428.31

Finding the Fourth Proportional to 865,621.18, 1,194,619.04 and 478,428.31

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Solution

The fourth proportional to 865,621.18, 1,194,619.04 and 478,428.31 is: 660,265.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,621.18 : 1,194,619.04 = 478,428.31 : x
  2. Step 2: Convert to fraction form
    865,621.18/1,194,619.04 = 478,428.31/x
  3. Step 3: Cross multiply
    865,621.18x = 1,194,619.04 × 478,428.31
  4. Step 4: Simplify right side
    865,621.18x = 571,539,568,401.02
  5. Step 5: Solve for x
    x = 571,539,568,401.02/865,621.18
  6. Step 6: Final answer
    x = 660,265.23

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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.