Home / 715,081.28-1,072,605.36-359,999.96

Finding the Fourth Proportional to 715,081.28, 1,072,605.36 and 359,999.96

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Solution

The fourth proportional to 715,081.28, 1,072,605.36 and 359,999.96 is: 539,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,081.28 : 1,072,605.36 = 359,999.96 : x
  2. Step 2: Convert to fraction form
    715,081.28/1,072,605.36 = 359,999.96/x
  3. Step 3: Cross multiply
    715,081.28x = 1,072,605.36 × 359,999.96
  4. Step 4: Simplify right side
    715,081.28x = 386,137,886,695.79
  5. Step 5: Solve for x
    x = 386,137,886,695.79/715,081.28
  6. Step 6: Final answer
    x = 539,991.60

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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.