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Finding the Fourth Proportional to 613,277.20, 919,915.80 and 558,164.80

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Solution

The fourth proportional to 613,277.20, 919,915.80 and 558,164.80 is: 837,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,277.20 : 919,915.80 = 558,164.80 : x
  2. Step 2: Convert to fraction form
    613,277.20/919,915.80 = 558,164.80/x
  3. Step 3: Cross multiply
    613,277.20x = 919,915.80 × 558,164.80
  4. Step 4: Simplify right side
    613,277.20x = 513,464,618,523.84
  5. Step 5: Solve for x
    x = 513,464,618,523.84/613,277.20
  6. Step 6: Final answer
    x = 837,247.20

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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.