Home / 709,828-1,064,217.12-429,282.88

Finding the Fourth Proportional to 709,828, 1,064,217.12 and 429,282.88

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Solution

The fourth proportional to 709,828, 1,064,217.12 and 429,282.88 is: 643,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,828 : 1,064,217.12 = 429,282.88 : x
  2. Step 2: Convert to fraction form
    709,828/1,064,217.12 = 429,282.88/x
  3. Step 3: Cross multiply
    709,828x = 1,064,217.12 × 429,282.88
  4. Step 4: Simplify right side
    709,828x = 456,850,190,218.91
  5. Step 5: Solve for x
    x = 456,850,190,218.91/709,828
  6. Step 6: Final answer
    x = 643,606.89

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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.