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Finding the Fourth Proportional to 874,330.64, 1,311,672.76 and 368,892.87

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Solution

The fourth proportional to 874,330.64, 1,311,672.76 and 368,892.87 is: 553,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,330.64 : 1,311,672.76 = 368,892.87 : x
  2. Step 2: Convert to fraction form
    874,330.64/1,311,672.76 = 368,892.87/x
  3. Step 3: Cross multiply
    874,330.64x = 1,311,672.76 × 368,892.87
  4. Step 4: Simplify right side
    874,330.64x = 483,866,723,096.22
  5. Step 5: Solve for x
    x = 483,866,723,096.22/874,330.64
  6. Step 6: Final answer
    x = 553,413.89

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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.