Home / 828,288.20-1,240,682.70-688,320.20

Finding the Fourth Proportional to 828,288.20, 1,240,682.70 and 688,320.20

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Solution

The fourth proportional to 828,288.20, 1,240,682.70 and 688,320.20 is: 1,031,026.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,288.20 : 1,240,682.70 = 688,320.20 : x
  2. Step 2: Convert to fraction form
    828,288.20/1,240,682.70 = 688,320.20/x
  3. Step 3: Cross multiply
    828,288.20x = 1,240,682.70 × 688,320.20
  4. Step 4: Simplify right side
    828,288.20x = 853,986,964,200.54
  5. Step 5: Solve for x
    x = 853,986,964,200.54/828,288.20
  6. Step 6: Final answer
    x = 1,031,026.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.