Home / 828,419.30-1,143,211.45-465,835.43

Finding the Fourth Proportional to 828,419.30, 1,143,211.45 and 465,835.43

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Solution

The fourth proportional to 828,419.30, 1,143,211.45 and 465,835.43 is: 642,848.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,419.30 : 1,143,211.45 = 465,835.43 : x
  2. Step 2: Convert to fraction form
    828,419.30/1,143,211.45 = 465,835.43/x
  3. Step 3: Cross multiply
    828,419.30x = 1,143,211.45 × 465,835.43
  4. Step 4: Simplify right side
    828,419.30x = 532,548,395,433.11
  5. Step 5: Solve for x
    x = 532,548,395,433.11/828,419.30
  6. Step 6: Final answer
    x = 642,848.85

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1.5x scale

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.