Home / 847,810.20-1,271,715.30-511,230.90

Finding the Fourth Proportional to 847,810.20, 1,271,715.30 and 511,230.90

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Solution

The fourth proportional to 847,810.20, 1,271,715.30 and 511,230.90 is: 766,846.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,810.20 : 1,271,715.30 = 511,230.90 : x
  2. Step 2: Convert to fraction form
    847,810.20/1,271,715.30 = 511,230.90/x
  3. Step 3: Cross multiply
    847,810.20x = 1,271,715.30 × 511,230.90
  4. Step 4: Simplify right side
    847,810.20x = 650,140,157,362.77
  5. Step 5: Solve for x
    x = 650,140,157,362.77/847,810.20
  6. Step 6: Final answer
    x = 766,846.35

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Double scale
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Similar ratio
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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.