Home / 812,077.47-1,120,409.28-472,480.11

Finding the Fourth Proportional to 812,077.47, 1,120,409.28 and 472,480.11

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Solution

The fourth proportional to 812,077.47, 1,120,409.28 and 472,480.11 is: 651,872.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,077.47 : 1,120,409.28 = 472,480.11 : x
  2. Step 2: Convert to fraction form
    812,077.47/1,120,409.28 = 472,480.11/x
  3. Step 3: Cross multiply
    812,077.47x = 1,120,409.28 × 472,480.11
  4. Step 4: Simplify right side
    812,077.47x = 529,371,099,859.42
  5. Step 5: Solve for x
    x = 529,371,099,859.42/812,077.47
  6. Step 6: Final answer
    x = 651,872.66

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.