Home / 864,478.86-1,295,627.52-438,121.85

Finding the Fourth Proportional to 864,478.86, 1,295,627.52 and 438,121.85

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Solution

The fourth proportional to 864,478.86, 1,295,627.52 and 438,121.85 is: 656,629.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,478.86 : 1,295,627.52 = 438,121.85 : x
  2. Step 2: Convert to fraction form
    864,478.86/1,295,627.52 = 438,121.85/x
  3. Step 3: Cross multiply
    864,478.86x = 1,295,627.52 × 438,121.85
  4. Step 4: Simplify right side
    864,478.86x = 567,642,719,495.17
  5. Step 5: Solve for x
    x = 567,642,719,495.17/864,478.86
  6. Step 6: Final answer
    x = 656,629.96

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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.