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Finding the Fourth Proportional to 971,995.20, 1,457,359.20 and 872,462.40

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Solution

The fourth proportional to 971,995.20, 1,457,359.20 and 872,462.40 is: 1,308,124.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,995.20 : 1,457,359.20 = 872,462.40 : x
  2. Step 2: Convert to fraction form
    971,995.20/1,457,359.20 = 872,462.40/x
  3. Step 3: Cross multiply
    971,995.20x = 1,457,359.20 × 872,462.40
  4. Step 4: Simplify right side
    971,995.20x = 1,271,491,105,294.08
  5. Step 5: Solve for x
    x = 1,271,491,105,294.08/971,995.20
  6. Step 6: Final answer
    x = 1,308,124.88

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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.