Home / 828,296.20-1,240,694.70-688,328.20

Finding the Fourth Proportional to 828,296.20, 1,240,694.70 and 688,328.20

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Solution

The fourth proportional to 828,296.20, 1,240,694.70 and 688,328.20 is: 1,031,038.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,296.20 : 1,240,694.70 = 688,328.20 : x
  2. Step 2: Convert to fraction form
    828,296.20/1,240,694.70 = 688,328.20/x
  3. Step 3: Cross multiply
    828,296.20x = 1,240,694.70 × 688,328.20
  4. Step 4: Simplify right side
    828,296.20x = 854,005,149,600.54
  5. Step 5: Solve for x
    x = 854,005,149,600.54/828,296.20
  6. Step 6: Final answer
    x = 1,031,038.35

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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.