Home / 828,909.30-1,244,285.55-513,722.10

Finding the Fourth Proportional to 828,909.30, 1,244,285.55 and 513,722.10

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Solution

The fourth proportional to 828,909.30, 1,244,285.55 and 513,722.10 is: 771,154.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,909.30 : 1,244,285.55 = 513,722.10 : x
  2. Step 2: Convert to fraction form
    828,909.30/1,244,285.55 = 513,722.10/x
  3. Step 3: Cross multiply
    828,909.30x = 1,244,285.55 × 513,722.10
  4. Step 4: Simplify right side
    828,909.30x = 639,216,985,745.66
  5. Step 5: Solve for x
    x = 639,216,985,745.66/828,909.30
  6. Step 6: Final answer
    x = 771,154.32

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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.