Home / 1,147,143.40-1,720,712-427,468.72

Finding the Fourth Proportional to 1,147,143.40, 1,720,712 and 427,468.72

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Solution

The fourth proportional to 1,147,143.40, 1,720,712 and 427,468.72 is: 641,201.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,143.40 : 1,720,712 = 427,468.72 : x
  2. Step 2: Convert to fraction form
    1,147,143.40/1,720,712 = 427,468.72/x
  3. Step 3: Cross multiply
    1,147,143.40x = 1,720,712 × 427,468.72
  4. Step 4: Simplify right side
    1,147,143.40x = 735,550,556,128.64
  5. Step 5: Solve for x
    x = 735,550,556,128.64/1,147,143.40
  6. Step 6: Final answer
    x = 641,201.92

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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.