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Finding the Fourth Proportional to 613,118.96, 920,203.32 and 347,140.88

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Solution

The fourth proportional to 613,118.96, 920,203.32 and 347,140.88 is: 521,008.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,118.96 : 920,203.32 = 347,140.88 : x
  2. Step 2: Convert to fraction form
    613,118.96/920,203.32 = 347,140.88/x
  3. Step 3: Cross multiply
    613,118.96x = 920,203.32 × 347,140.88
  4. Step 4: Simplify right side
    613,118.96x = 319,440,190,283.72
  5. Step 5: Solve for x
    x = 319,440,190,283.72/613,118.96
  6. Step 6: Final answer
    x = 521,008.50

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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.