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Finding the Fourth Proportional to 404,726.80, 607,090.20 and 377,078.80

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Solution

The fourth proportional to 404,726.80, 607,090.20 and 377,078.80 is: 565,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,726.80 : 607,090.20 = 377,078.80 : x
  2. Step 2: Convert to fraction form
    404,726.80/607,090.20 = 377,078.80/x
  3. Step 3: Cross multiply
    404,726.80x = 607,090.20 × 377,078.80
  4. Step 4: Simplify right side
    404,726.80x = 228,920,844,107.76
  5. Step 5: Solve for x
    x = 228,920,844,107.76/404,726.80
  6. Step 6: Final answer
    x = 565,618.20

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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.