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Finding the Fourth Proportional to 971,998.80, 1,457,998.20 and 672,817.20

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Solution

The fourth proportional to 971,998.80, 1,457,998.20 and 672,817.20 is: 1,009,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,998.80 : 1,457,998.20 = 672,817.20 : x
  2. Step 2: Convert to fraction form
    971,998.80/1,457,998.20 = 672,817.20/x
  3. Step 3: Cross multiply
    971,998.80x = 1,457,998.20 × 672,817.20
  4. Step 4: Simplify right side
    971,998.80x = 980,966,266,529.04
  5. Step 5: Solve for x
    x = 980,966,266,529.04/971,998.80
  6. Step 6: Final answer
    x = 1,009,225.80

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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.