Home / 812,001.36-1,217,448.45-411,870.57

Finding the Fourth Proportional to 812,001.36, 1,217,448.45 and 411,870.57

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Solution

The fourth proportional to 812,001.36, 1,217,448.45 and 411,870.57 is: 617,525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,001.36 : 1,217,448.45 = 411,870.57 : x
  2. Step 2: Convert to fraction form
    812,001.36/1,217,448.45 = 411,870.57/x
  3. Step 3: Cross multiply
    812,001.36x = 1,217,448.45 × 411,870.57
  4. Step 4: Simplify right side
    812,001.36x = 501,431,190,488.22
  5. Step 5: Solve for x
    x = 501,431,190,488.22/812,001.36
  6. Step 6: Final answer
    x = 617,525.06

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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.