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Finding the Fourth Proportional to 653,480.20, 978,908.10 and 372,669.40

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Solution

The fourth proportional to 653,480.20, 978,908.10 and 372,669.40 is: 558,255.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,480.20 : 978,908.10 = 372,669.40 : x
  2. Step 2: Convert to fraction form
    653,480.20/978,908.10 = 372,669.40/x
  3. Step 3: Cross multiply
    653,480.20x = 978,908.10 × 372,669.40
  4. Step 4: Simplify right side
    653,480.20x = 364,809,094,282.14
  5. Step 5: Solve for x
    x = 364,809,094,282.14/653,480.20
  6. Step 6: Final answer
    x = 558,255.77

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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.