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Finding the Fourth Proportional to 904,036.68, 1,356,930 and 664,885.80

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Solution

The fourth proportional to 904,036.68, 1,356,930 and 664,885.80 is: 997,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,036.68 : 1,356,930 = 664,885.80 : x
  2. Step 2: Convert to fraction form
    904,036.68/1,356,930 = 664,885.80/x
  3. Step 3: Cross multiply
    904,036.68x = 1,356,930 × 664,885.80
  4. Step 4: Simplify right side
    904,036.68x = 902,203,488,594.00
  5. Step 5: Solve for x
    x = 902,203,488,594.00/904,036.68
  6. Step 6: Final answer
    x = 997,972.22

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1.5x scale

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.