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Finding the Fourth Proportional to 613,260.90, 919,934.55 and 347,148.90

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Solution

The fourth proportional to 613,260.90, 919,934.55 and 347,148.90 is: 520,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,260.90 : 919,934.55 = 347,148.90 : x
  2. Step 2: Convert to fraction form
    613,260.90/919,934.55 = 347,148.90/x
  3. Step 3: Cross multiply
    613,260.90x = 919,934.55 × 347,148.90
  4. Step 4: Simplify right side
    613,260.90x = 319,354,267,104.50
  5. Step 5: Solve for x
    x = 319,354,267,104.50/613,260.90
  6. Step 6: Final answer
    x = 520,747.80

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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.