Home / 427,320.11-640,743.62-174,777.90

Finding the Fourth Proportional to 427,320.11, 640,743.62 and 174,777.90

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Solution

The fourth proportional to 427,320.11, 640,743.62 and 174,777.90 is: 262,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,320.11 : 640,743.62 = 174,777.90 : x
  2. Step 2: Convert to fraction form
    427,320.11/640,743.62 = 174,777.90/x
  3. Step 3: Cross multiply
    427,320.11x = 640,743.62 × 174,777.90
  4. Step 4: Simplify right side
    427,320.11x = 111,987,823,468.11
  5. Step 5: Solve for x
    x = 111,987,823,468.11/427,320.11
  6. Step 6: Final answer
    x = 262,070.10

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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.