Home / 927,600.40-1,393,090.20-811,478.80

Finding the Fourth Proportional to 927,600.40, 1,393,090.20 and 811,478.80

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Solution

The fourth proportional to 927,600.40, 1,393,090.20 and 811,478.80 is: 1,218,696.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,600.40 : 1,393,090.20 = 811,478.80 : x
  2. Step 2: Convert to fraction form
    927,600.40/1,393,090.20 = 811,478.80/x
  3. Step 3: Cross multiply
    927,600.40x = 1,393,090.20 × 811,478.80
  4. Step 4: Simplify right side
    927,600.40x = 1,130,463,163,787.76
  5. Step 5: Solve for x
    x = 1,130,463,163,787.76/927,600.40
  6. Step 6: Final answer
    x = 1,218,696.29

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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.