Home / 687,412.78-1,031,107.82-282,522.94

Finding the Fourth Proportional to 687,412.78, 1,031,107.82 and 282,522.94

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Solution

The fourth proportional to 687,412.78, 1,031,107.82 and 282,522.94 is: 423,779.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,412.78 : 1,031,107.82 = 282,522.94 : x
  2. Step 2: Convert to fraction form
    687,412.78/1,031,107.82 = 282,522.94/x
  3. Step 3: Cross multiply
    687,412.78x = 1,031,107.82 × 282,522.94
  4. Step 4: Simplify right side
    687,412.78x = 291,311,612,763.39
  5. Step 5: Solve for x
    x = 291,311,612,763.39/687,412.78
  6. Step 6: Final answer
    x = 423,779.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.