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Finding the Fourth Proportional to 631,272.60, 946,908.90 and 315,615.60

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Solution

The fourth proportional to 631,272.60, 946,908.90 and 315,615.60 is: 473,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,272.60 : 946,908.90 = 315,615.60 : x
  2. Step 2: Convert to fraction form
    631,272.60/946,908.90 = 315,615.60/x
  3. Step 3: Cross multiply
    631,272.60x = 946,908.90 × 315,615.60
  4. Step 4: Simplify right side
    631,272.60x = 298,859,220,618.84
  5. Step 5: Solve for x
    x = 298,859,220,618.84/631,272.60
  6. Step 6: Final answer
    x = 473,423.40

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Half scale
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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.