Home / 852,094.60-1,278,141.90-431,315.80

Finding the Fourth Proportional to 852,094.60, 1,278,141.90 and 431,315.80

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Solution

The fourth proportional to 852,094.60, 1,278,141.90 and 431,315.80 is: 646,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,094.60 : 1,278,141.90 = 431,315.80 : x
  2. Step 2: Convert to fraction form
    852,094.60/1,278,141.90 = 431,315.80/x
  3. Step 3: Cross multiply
    852,094.60x = 1,278,141.90 × 431,315.80
  4. Step 4: Simplify right side
    852,094.60x = 551,282,796,112.02
  5. Step 5: Solve for x
    x = 551,282,796,112.02/852,094.60
  6. Step 6: Final answer
    x = 646,973.70

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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.