Home / 1,286,514.90-1,775,105.28-742,616.10

Finding the Fourth Proportional to 1,286,514.90, 1,775,105.28 and 742,616.10

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Solution

The fourth proportional to 1,286,514.90, 1,775,105.28 and 742,616.10 is: 1,024,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,514.90 : 1,775,105.28 = 742,616.10 : x
  2. Step 2: Convert to fraction form
    1,286,514.90/1,775,105.28 = 742,616.10/x
  3. Step 3: Cross multiply
    1,286,514.90x = 1,775,105.28 × 742,616.10
  4. Step 4: Simplify right side
    1,286,514.90x = 1,318,221,760,123.01
  5. Step 5: Solve for x
    x = 1,318,221,760,123.01/1,286,514.90
  6. Step 6: Final answer
    x = 1,024,645.54

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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.