Home / 852,090.10-1,278,135.15-431,311.30

Finding the Fourth Proportional to 852,090.10, 1,278,135.15 and 431,311.30

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Solution

The fourth proportional to 852,090.10, 1,278,135.15 and 431,311.30 is: 646,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,090.10 : 1,278,135.15 = 431,311.30 : x
  2. Step 2: Convert to fraction form
    852,090.10/1,278,135.15 = 431,311.30/x
  3. Step 3: Cross multiply
    852,090.10x = 1,278,135.15 × 431,311.30
  4. Step 4: Simplify right side
    852,090.10x = 551,274,133,122.20
  5. Step 5: Solve for x
    x = 551,274,133,122.20/852,090.10
  6. Step 6: Final answer
    x = 646,966.95

Related Problems

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Half scale
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Double scale
Find fourth proportional to 852,091.10, 1,278,136.65 and 431,312.30
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.