Home / 1,101,810.78-1,521,102.20-771,175.59

Finding the Fourth Proportional to 1,101,810.78, 1,521,102.20 and 771,175.59

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Solution

The fourth proportional to 1,101,810.78, 1,521,102.20 and 771,175.59 is: 1,064,644.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101,810.78 : 1,521,102.20 = 771,175.59 : x
  2. Step 2: Convert to fraction form
    1,101,810.78/1,521,102.20 = 771,175.59/x
  3. Step 3: Cross multiply
    1,101,810.78x = 1,521,102.20 × 771,175.59
  4. Step 4: Simplify right side
    1,101,810.78x = 1,173,036,882,679.42
  5. Step 5: Solve for x
    x = 1,173,036,882,679.42/1,101,810.78
  6. Step 6: Final answer
    x = 1,064,644.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.