Home / 1,130,778.45-1,560,456.16-621,469.89

Finding the Fourth Proportional to 1,130,778.45, 1,560,456.16 and 621,469.89

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Solution

The fourth proportional to 1,130,778.45, 1,560,456.16 and 621,469.89 is: 857,618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,778.45 : 1,560,456.16 = 621,469.89 : x
  2. Step 2: Convert to fraction form
    1,130,778.45/1,560,456.16 = 621,469.89/x
  3. Step 3: Cross multiply
    1,130,778.45x = 1,560,456.16 × 621,469.89
  4. Step 4: Simplify right side
    1,130,778.45x = 969,776,516,551.35
  5. Step 5: Solve for x
    x = 969,776,516,551.35/1,130,778.45
  6. Step 6: Final answer
    x = 857,618.50

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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.