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Finding the Fourth Proportional to 1,293,456.40, 1,941,059.40 and 724,836.40

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Solution

The fourth proportional to 1,293,456.40, 1,941,059.40 and 724,836.40 is: 1,087,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,456.40 : 1,941,059.40 = 724,836.40 : x
  2. Step 2: Convert to fraction form
    1,293,456.40/1,941,059.40 = 724,836.40/x
  3. Step 3: Cross multiply
    1,293,456.40x = 1,941,059.40 × 724,836.40
  4. Step 4: Simplify right side
    1,293,456.40x = 1,406,950,507,682.16
  5. Step 5: Solve for x
    x = 1,406,950,507,682.16/1,293,456.40
  6. Step 6: Final answer
    x = 1,087,744.83

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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.