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Finding the Fourth Proportional to 553,830.55, 764,541.29 and 324,355.93

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Solution

The fourth proportional to 553,830.55, 764,541.29 and 324,355.93 is: 447,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,830.55 : 764,541.29 = 324,355.93 : x
  2. Step 2: Convert to fraction form
    553,830.55/764,541.29 = 324,355.93/x
  3. Step 3: Cross multiply
    553,830.55x = 764,541.29 × 324,355.93
  4. Step 4: Simplify right side
    553,830.55x = 247,983,500,040.89
  5. Step 5: Solve for x
    x = 247,983,500,040.89/553,830.55
  6. Step 6: Final answer
    x = 447,760.60

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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.