Home / 865,069.12-1,295,863.80-431,479.36

Finding the Fourth Proportional to 865,069.12, 1,295,863.80 and 431,479.36

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Solution

The fourth proportional to 865,069.12, 1,295,863.80 and 431,479.36 is: 646,351.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,069.12 : 1,295,863.80 = 431,479.36 : x
  2. Step 2: Convert to fraction form
    865,069.12/1,295,863.80 = 431,479.36/x
  3. Step 3: Cross multiply
    865,069.12x = 1,295,863.80 × 431,479.36
  4. Step 4: Simplify right side
    865,069.12x = 559,138,483,071.17
  5. Step 5: Solve for x
    x = 559,138,483,071.17/865,069.12
  6. Step 6: Final answer
    x = 646,351.22

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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.