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Finding the Fourth Proportional to 904,912, 1,356,434.80 and 406,625.92

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Solution

The fourth proportional to 904,912, 1,356,434.80 and 406,625.92 is: 609,519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,912 : 1,356,434.80 = 406,625.92 : x
  2. Step 2: Convert to fraction form
    904,912/1,356,434.80 = 406,625.92/x
  3. Step 3: Cross multiply
    904,912x = 1,356,434.80 × 406,625.92
  4. Step 4: Simplify right side
    904,912x = 551,561,548,470.02
  5. Step 5: Solve for x
    x = 551,561,548,470.02/904,912
  6. Step 6: Final answer
    x = 609,519.54

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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.