Home / 811,942.98-1,217,111.25-384,728.34

Finding the Fourth Proportional to 811,942.98, 1,217,111.25 and 384,728.34

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Solution

The fourth proportional to 811,942.98, 1,217,111.25 and 384,728.34 is: 576,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,942.98 : 1,217,111.25 = 384,728.34 : x
  2. Step 2: Convert to fraction form
    811,942.98/1,217,111.25 = 384,728.34/x
  3. Step 3: Cross multiply
    811,942.98x = 1,217,111.25 × 384,728.34
  4. Step 4: Simplify right side
    811,942.98x = 468,257,190,807.83
  5. Step 5: Solve for x
    x = 468,257,190,807.83/811,942.98
  6. Step 6: Final answer
    x = 576,711.91

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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.