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Finding the Fourth Proportional to 553,999.67, 764,875.34 and 347,551.09

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Solution

The fourth proportional to 553,999.67, 764,875.34 and 347,551.09 is: 479,843.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,999.67 : 764,875.34 = 347,551.09 : x
  2. Step 2: Convert to fraction form
    553,999.67/764,875.34 = 347,551.09/x
  3. Step 3: Cross multiply
    553,999.67x = 764,875.34 × 347,551.09
  4. Step 4: Simplify right side
    553,999.67x = 265,833,255,784.49
  5. Step 5: Solve for x
    x = 265,833,255,784.49/553,999.67
  6. Step 6: Final answer
    x = 479,843.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.