Home / 1,130,439.78-1,560,006.54-621,174.96

Finding the Fourth Proportional to 1,130,439.78, 1,560,006.54 and 621,174.96

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Solution

The fourth proportional to 1,130,439.78, 1,560,006.54 and 621,174.96 is: 857,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,439.78 : 1,560,006.54 = 621,174.96 : x
  2. Step 2: Convert to fraction form
    1,130,439.78/1,560,006.54 = 621,174.96/x
  3. Step 3: Cross multiply
    1,130,439.78x = 1,560,006.54 × 621,174.96
  4. Step 4: Simplify right side
    1,130,439.78x = 969,037,000,084.24
  5. Step 5: Solve for x
    x = 969,037,000,084.24/1,130,439.78
  6. Step 6: Final answer
    x = 857,221.25

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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.