Home / 1,137,971.23-1,707,211.05-428,005.42

Finding the Fourth Proportional to 1,137,971.23, 1,707,211.05 and 428,005.42

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Solution

The fourth proportional to 1,137,971.23, 1,707,211.05 and 428,005.42 is: 642,103.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,971.23 : 1,707,211.05 = 428,005.42 : x
  2. Step 2: Convert to fraction form
    1,137,971.23/1,707,211.05 = 428,005.42/x
  3. Step 3: Cross multiply
    1,137,971.23x = 1,707,211.05 × 428,005.42
  4. Step 4: Simplify right side
    1,137,971.23x = 730,695,582,483.89
  5. Step 5: Solve for x
    x = 730,695,582,483.89/1,137,971.23
  6. Step 6: Final answer
    x = 642,103.74

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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.