Home / 686,967.43-1,030,453.78-287,327.86

Finding the Fourth Proportional to 686,967.43, 1,030,453.78 and 287,327.86

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Solution

The fourth proportional to 686,967.43, 1,030,453.78 and 287,327.86 is: 430,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,967.43 : 1,030,453.78 = 287,327.86 : x
  2. Step 2: Convert to fraction form
    686,967.43/1,030,453.78 = 287,327.86/x
  3. Step 3: Cross multiply
    686,967.43x = 1,030,453.78 × 287,327.86
  4. Step 4: Simplify right side
    686,967.43x = 296,078,075,872.49
  5. Step 5: Solve for x
    x = 296,078,075,872.49/686,967.43
  6. Step 6: Final answer
    x = 430,992.89

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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.