Home / 1,312,520.75-1,811,279.85-708,908.75

Finding the Fourth Proportional to 1,312,520.75, 1,811,279.85 and 708,908.75

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Solution

The fourth proportional to 1,312,520.75, 1,811,279.85 and 708,908.75 is: 978,294.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,520.75 : 1,811,279.85 = 708,908.75 : x
  2. Step 2: Convert to fraction form
    1,312,520.75/1,811,279.85 = 708,908.75/x
  3. Step 3: Cross multiply
    1,312,520.75x = 1,811,279.85 × 708,908.75
  4. Step 4: Simplify right side
    1,312,520.75x = 1,284,032,134,363.69
  5. Step 5: Solve for x
    x = 1,284,032,134,363.69/1,312,520.75
  6. Step 6: Final answer
    x = 978,294.73

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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.