Home / 715,879.44-1,072,385.64-431,411.76

Finding the Fourth Proportional to 715,879.44, 1,072,385.64 and 431,411.76

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Solution

The fourth proportional to 715,879.44, 1,072,385.64 and 431,411.76 is: 646,253.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,879.44 : 1,072,385.64 = 431,411.76 : x
  2. Step 2: Convert to fraction form
    715,879.44/1,072,385.64 = 431,411.76/x
  3. Step 3: Cross multiply
    715,879.44x = 1,072,385.64 × 431,411.76
  4. Step 4: Simplify right side
    715,879.44x = 462,639,776,351.13
  5. Step 5: Solve for x
    x = 462,639,776,351.13/715,879.44
  6. Step 6: Final answer
    x = 646,253.76

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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.