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Finding the Fourth Proportional to 606,475.20, 909,712.80 and 538,240.80

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Solution

The fourth proportional to 606,475.20, 909,712.80 and 538,240.80 is: 807,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,475.20 : 909,712.80 = 538,240.80 : x
  2. Step 2: Convert to fraction form
    606,475.20/909,712.80 = 538,240.80/x
  3. Step 3: Cross multiply
    606,475.20x = 909,712.80 × 538,240.80
  4. Step 4: Simplify right side
    606,475.20x = 489,644,545,242.24
  5. Step 5: Solve for x
    x = 489,644,545,242.24/606,475.20
  6. Step 6: Final answer
    x = 807,361.20

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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.