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Finding the Fourth Proportional to 664,882.40, 997,323.60 and 310,588.40

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Solution

The fourth proportional to 664,882.40, 997,323.60 and 310,588.40 is: 465,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,882.40 : 997,323.60 = 310,588.40 : x
  2. Step 2: Convert to fraction form
    664,882.40/997,323.60 = 310,588.40/x
  3. Step 3: Cross multiply
    664,882.40x = 997,323.60 × 310,588.40
  4. Step 4: Simplify right side
    664,882.40x = 309,757,141,206.24
  5. Step 5: Solve for x
    x = 309,757,141,206.24/664,882.40
  6. Step 6: Final answer
    x = 465,882.60

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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.