Home / 807,138.74-1,114,278.91-625,442.78

Finding the Fourth Proportional to 807,138.74, 1,114,278.91 and 625,442.78

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Solution

The fourth proportional to 807,138.74, 1,114,278.91 and 625,442.78 is: 863,442.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,138.74 : 1,114,278.91 = 625,442.78 : x
  2. Step 2: Convert to fraction form
    807,138.74/1,114,278.91 = 625,442.78/x
  3. Step 3: Cross multiply
    807,138.74x = 1,114,278.91 × 625,442.78
  4. Step 4: Simplify right side
    807,138.74x = 696,917,692,030.77
  5. Step 5: Solve for x
    x = 696,917,692,030.77/807,138.74
  6. Step 6: Final answer
    x = 863,442.26

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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.