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Finding the Fourth Proportional to 661,667.60, 993,019.80 and 306,725.60

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Solution

The fourth proportional to 661,667.60, 993,019.80 and 306,725.60 is: 460,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,667.60 : 993,019.80 = 306,725.60 : x
  2. Step 2: Convert to fraction form
    661,667.60/993,019.80 = 306,725.60/x
  3. Step 3: Cross multiply
    661,667.60x = 993,019.80 × 306,725.60
  4. Step 4: Simplify right side
    661,667.60x = 304,584,593,966.88
  5. Step 5: Solve for x
    x = 304,584,593,966.88/661,667.60
  6. Step 6: Final answer
    x = 460,328.71

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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.