Home / 631,291.20-946,130.40-256,891.20

Finding the Fourth Proportional to 631,291.20, 946,130.40 and 256,891.20

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Solution

The fourth proportional to 631,291.20, 946,130.40 and 256,891.20 is: 385,008.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,291.20 : 946,130.40 = 256,891.20 : x
  2. Step 2: Convert to fraction form
    631,291.20/946,130.40 = 256,891.20/x
  3. Step 3: Cross multiply
    631,291.20x = 946,130.40 × 256,891.20
  4. Step 4: Simplify right side
    631,291.20x = 243,052,573,812.48
  5. Step 5: Solve for x
    x = 243,052,573,812.48/631,291.20
  6. Step 6: Final answer
    x = 385,008.65

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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.