Home / 1,288,257.85-1,777,628.50-715,187.31

Finding the Fourth Proportional to 1,288,257.85, 1,777,628.50 and 715,187.31

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Solution

The fourth proportional to 1,288,257.85, 1,777,628.50 and 715,187.31 is: 986,865.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,257.85 : 1,777,628.50 = 715,187.31 : x
  2. Step 2: Convert to fraction form
    1,288,257.85/1,777,628.50 = 715,187.31/x
  3. Step 3: Cross multiply
    1,288,257.85x = 1,777,628.50 × 715,187.31
  4. Step 4: Simplify right side
    1,288,257.85x = 1,271,337,345,094.34
  5. Step 5: Solve for x
    x = 1,271,337,345,094.34/1,288,257.85
  6. Step 6: Final answer
    x = 986,865.59

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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.