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Finding the Fourth Proportional to 971,998.80, 1,457,560.80 and 372,760.80

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Solution

The fourth proportional to 971,998.80, 1,457,560.80 and 372,760.80 is: 558,973.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,998.80 : 1,457,560.80 = 372,760.80 : x
  2. Step 2: Convert to fraction form
    971,998.80/1,457,560.80 = 372,760.80/x
  3. Step 3: Cross multiply
    971,998.80x = 1,457,560.80 × 372,760.80
  4. Step 4: Simplify right side
    971,998.80x = 543,321,529,856.64
  5. Step 5: Solve for x
    x = 543,321,529,856.64/971,998.80
  6. Step 6: Final answer
    x = 558,973.46

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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.