Home / 648,649.44-972,974.07-472,278.78

Finding the Fourth Proportional to 648,649.44, 972,974.07 and 472,278.78

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Solution

The fourth proportional to 648,649.44, 972,974.07 and 472,278.78 is: 708,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,649.44 : 972,974.07 = 472,278.78 : x
  2. Step 2: Convert to fraction form
    648,649.44/972,974.07 = 472,278.78/x
  3. Step 3: Cross multiply
    648,649.44x = 972,974.07 × 472,278.78
  4. Step 4: Simplify right side
    648,649.44x = 459,515,006,751.24
  5. Step 5: Solve for x
    x = 459,515,006,751.24/648,649.44
  6. Step 6: Final answer
    x = 708,418.10

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Double scale
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1.5x scale

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.