Home / 828,138.52-1,142,871.69-465,676.48

Finding the Fourth Proportional to 828,138.52, 1,142,871.69 and 465,676.48

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Solution

The fourth proportional to 828,138.52, 1,142,871.69 and 465,676.48 is: 642,656.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,138.52 : 1,142,871.69 = 465,676.48 : x
  2. Step 2: Convert to fraction form
    828,138.52/1,142,871.69 = 465,676.48/x
  3. Step 3: Cross multiply
    828,138.52x = 1,142,871.69 × 465,676.48
  4. Step 4: Simplify right side
    828,138.52x = 532,208,465,690.85
  5. Step 5: Solve for x
    x = 532,208,465,690.85/828,138.52
  6. Step 6: Final answer
    x = 642,656.33

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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.