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Finding the Fourth Proportional to 640,115.22, 960,775.47 and 324,798.42

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Solution

The fourth proportional to 640,115.22, 960,775.47 and 324,798.42 is: 487,503.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,115.22 : 960,775.47 = 324,798.42 : x
  2. Step 2: Convert to fraction form
    640,115.22/960,775.47 = 324,798.42/x
  3. Step 3: Cross multiply
    640,115.22x = 960,775.47 × 324,798.42
  4. Step 4: Simplify right side
    640,115.22x = 312,058,354,630.76
  5. Step 5: Solve for x
    x = 312,058,354,630.76/640,115.22
  6. Step 6: Final answer
    x = 487,503.41

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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.