Home / 921,824.80-1,379,972.40-811,232.80

Finding the Fourth Proportional to 921,824.80, 1,379,972.40 and 811,232.80

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Solution

The fourth proportional to 921,824.80, 1,379,972.40 and 811,232.80 is: 1,214,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,824.80 : 1,379,972.40 = 811,232.80 : x
  2. Step 2: Convert to fraction form
    921,824.80/1,379,972.40 = 811,232.80/x
  3. Step 3: Cross multiply
    921,824.80x = 1,379,972.40 × 811,232.80
  4. Step 4: Simplify right side
    921,824.80x = 1,119,478,873,974.72
  5. Step 5: Solve for x
    x = 1,119,478,873,974.72/921,824.80
  6. Step 6: Final answer
    x = 1,214,416.10

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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.