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Finding the Fourth Proportional to 631,281.60, 946,922.40 and 315,624.60

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Solution

The fourth proportional to 631,281.60, 946,922.40 and 315,624.60 is: 473,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,281.60 : 946,922.40 = 315,624.60 : x
  2. Step 2: Convert to fraction form
    631,281.60/946,922.40 = 315,624.60/x
  3. Step 3: Cross multiply
    631,281.60x = 946,922.40 × 315,624.60
  4. Step 4: Simplify right side
    631,281.60x = 298,872,003,731.04
  5. Step 5: Solve for x
    x = 298,872,003,731.04/631,281.60
  6. Step 6: Final answer
    x = 473,436.90

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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.