Home / 742,680.72-1,113,842.52-342,937.44

Finding the Fourth Proportional to 742,680.72, 1,113,842.52 and 342,937.44

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Solution

The fourth proportional to 742,680.72, 1,113,842.52 and 342,937.44 is: 514,323.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,680.72 : 1,113,842.52 = 342,937.44 : x
  2. Step 2: Convert to fraction form
    742,680.72/1,113,842.52 = 342,937.44/x
  3. Step 3: Cross multiply
    742,680.72x = 1,113,842.52 × 342,937.44
  4. Step 4: Simplify right side
    742,680.72x = 381,978,302,371.95
  5. Step 5: Solve for x
    x = 381,978,302,371.95/742,680.72
  6. Step 6: Final answer
    x = 514,323.71

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1.5x scale

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.