Home / 1,270,421.15-1,753,182.90-689,644.13

Finding the Fourth Proportional to 1,270,421.15, 1,753,182.90 and 689,644.13

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Solution

The fourth proportional to 1,270,421.15, 1,753,182.90 and 689,644.13 is: 951,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,421.15 : 1,753,182.90 = 689,644.13 : x
  2. Step 2: Convert to fraction form
    1,270,421.15/1,753,182.90 = 689,644.13/x
  3. Step 3: Cross multiply
    1,270,421.15x = 1,753,182.90 × 689,644.13
  4. Step 4: Simplify right side
    1,270,421.15x = 1,209,072,287,035.46
  5. Step 5: Solve for x
    x = 1,209,072,287,035.46/1,270,421.15
  6. Step 6: Final answer
    x = 951,709.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.