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Finding the Fourth Proportional to 554,314.56, 764,894.88 and 312,591.84

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Solution

The fourth proportional to 554,314.56, 764,894.88 and 312,591.84 is: 431,343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,314.56 : 764,894.88 = 312,591.84 : x
  2. Step 2: Convert to fraction form
    554,314.56/764,894.88 = 312,591.84/x
  3. Step 3: Cross multiply
    554,314.56x = 764,894.88 × 312,591.84
  4. Step 4: Simplify right side
    554,314.56x = 239,099,897,945.78
  5. Step 5: Solve for x
    x = 239,099,897,945.78/554,314.56
  6. Step 6: Final answer
    x = 431,343.35

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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.