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Finding the Fourth Proportional to 646,599.78, 892,335.22 and 360,119.87

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Solution

The fourth proportional to 646,599.78, 892,335.22 and 360,119.87 is: 496,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,599.78 : 892,335.22 = 360,119.87 : x
  2. Step 2: Convert to fraction form
    646,599.78/892,335.22 = 360,119.87/x
  3. Step 3: Cross multiply
    646,599.78x = 892,335.22 × 360,119.87
  4. Step 4: Simplify right side
    646,599.78x = 321,347,643,422.82
  5. Step 5: Solve for x
    x = 321,347,643,422.82/646,599.78
  6. Step 6: Final answer
    x = 496,980.75

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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.