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Finding the Fourth Proportional to 556,747.80, 835,121.70 and 415,030.20

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Solution

The fourth proportional to 556,747.80, 835,121.70 and 415,030.20 is: 622,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,747.80 : 835,121.70 = 415,030.20 : x
  2. Step 2: Convert to fraction form
    556,747.80/835,121.70 = 415,030.20/x
  3. Step 3: Cross multiply
    556,747.80x = 835,121.70 × 415,030.20
  4. Step 4: Simplify right side
    556,747.80x = 346,600,726,175.34
  5. Step 5: Solve for x
    x = 346,600,726,175.34/556,747.80
  6. Step 6: Final answer
    x = 622,545.30

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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.