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Finding the Fourth Proportional to 631,275.60, 946,913.40 and 315,618.60

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Solution

The fourth proportional to 631,275.60, 946,913.40 and 315,618.60 is: 473,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,275.60 : 946,913.40 = 315,618.60 : x
  2. Step 2: Convert to fraction form
    631,275.60/946,913.40 = 315,618.60/x
  3. Step 3: Cross multiply
    631,275.60x = 946,913.40 × 315,618.60
  4. Step 4: Simplify right side
    631,275.60x = 298,863,481,629.24
  5. Step 5: Solve for x
    x = 298,863,481,629.24/631,275.60
  6. Step 6: Final answer
    x = 473,427.90

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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.