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Finding the Fourth Proportional to 1,296,609.80, 1,944,914.70 and 981,681.80

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Solution

The fourth proportional to 1,296,609.80, 1,944,914.70 and 981,681.80 is: 1,472,522.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,609.80 : 1,944,914.70 = 981,681.80 : x
  2. Step 2: Convert to fraction form
    1,296,609.80/1,944,914.70 = 981,681.80/x
  3. Step 3: Cross multiply
    1,296,609.80x = 1,944,914.70 × 981,681.80
  4. Step 4: Simplify right side
    1,296,609.80x = 1,909,287,363,542.46
  5. Step 5: Solve for x
    x = 1,909,287,363,542.46/1,296,609.80
  6. Step 6: Final answer
    x = 1,472,522.70

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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.