Home / 828,005.20-1,142,768.18-465,458.92

Finding the Fourth Proportional to 828,005.20, 1,142,768.18 and 465,458.92

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Solution

The fourth proportional to 828,005.20, 1,142,768.18 and 465,458.92 is: 642,401.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,005.20 : 1,142,768.18 = 465,458.92 : x
  2. Step 2: Convert to fraction form
    828,005.20/1,142,768.18 = 465,458.92/x
  3. Step 3: Cross multiply
    828,005.20x = 1,142,768.18 × 465,458.92
  4. Step 4: Simplify right side
    828,005.20x = 531,911,642,873.17
  5. Step 5: Solve for x
    x = 531,911,642,873.17/828,005.20
  6. Step 6: Final answer
    x = 642,401.33

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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.