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Finding the Fourth Proportional to 606,429.60, 909,644.40 and 417,472.80

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Solution

The fourth proportional to 606,429.60, 909,644.40 and 417,472.80 is: 626,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,429.60 : 909,644.40 = 417,472.80 : x
  2. Step 2: Convert to fraction form
    606,429.60/909,644.40 = 417,472.80/x
  3. Step 3: Cross multiply
    606,429.60x = 909,644.40 × 417,472.80
  4. Step 4: Simplify right side
    606,429.60x = 379,751,794,672.32
  5. Step 5: Solve for x
    x = 379,751,794,672.32/606,429.60
  6. Step 6: Final answer
    x = 626,209.20

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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.