Home / 742,163.76-1,112,333.28-342,249.36

Finding the Fourth Proportional to 742,163.76, 1,112,333.28 and 342,249.36

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Solution

The fourth proportional to 742,163.76, 1,112,333.28 and 342,249.36 is: 512,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,163.76 : 1,112,333.28 = 342,249.36 : x
  2. Step 2: Convert to fraction form
    742,163.76/1,112,333.28 = 342,249.36/x
  3. Step 3: Cross multiply
    742,163.76x = 1,112,333.28 × 342,249.36
  4. Step 4: Simplify right side
    742,163.76x = 380,695,353,186.70
  5. Step 5: Solve for x
    x = 380,695,353,186.70/742,163.76
  6. Step 6: Final answer
    x = 512,953.30

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Double scale
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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.