Home / 812,008.26-1,217,458.80-411,877.50

Finding the Fourth Proportional to 812,008.26, 1,217,458.80 and 411,877.50

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Solution

The fourth proportional to 812,008.26, 1,217,458.80 and 411,877.50 is: 617,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,008.26 : 1,217,458.80 = 411,877.50 : x
  2. Step 2: Convert to fraction form
    812,008.26/1,217,458.80 = 411,877.50/x
  3. Step 3: Cross multiply
    812,008.26x = 1,217,458.80 × 411,877.50
  4. Step 4: Simplify right side
    812,008.26x = 501,443,886,897
  5. Step 5: Solve for x
    x = 501,443,886,897/812,008.26
  6. Step 6: Final answer
    x = 617,535.45

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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.