Home / 852,104.10-1,278,156.15-431,325.30

Finding the Fourth Proportional to 852,104.10, 1,278,156.15 and 431,325.30

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Solution

The fourth proportional to 852,104.10, 1,278,156.15 and 431,325.30 is: 646,987.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,104.10 : 1,278,156.15 = 431,325.30 : x
  2. Step 2: Convert to fraction form
    852,104.10/1,278,156.15 = 431,325.30/x
  3. Step 3: Cross multiply
    852,104.10x = 1,278,156.15 × 431,325.30
  4. Step 4: Simplify right side
    852,104.10x = 551,301,084,845.60
  5. Step 5: Solve for x
    x = 551,301,084,845.60/852,104.10
  6. Step 6: Final answer
    x = 646,987.95

Related Problems

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Half scale
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Double scale
Find fourth proportional to 852,105.10, 1,278,157.65 and 431,326.30
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.