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Finding the Fourth Proportional to 519,772.23, 779,931.60 and 368,942.67

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Solution

The fourth proportional to 519,772.23, 779,931.60 and 368,942.67 is: 553,607.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,772.23 : 779,931.60 = 368,942.67 : x
  2. Step 2: Convert to fraction form
    519,772.23/779,931.60 = 368,942.67/x
  3. Step 3: Cross multiply
    519,772.23x = 779,931.60 × 368,942.67
  4. Step 4: Simplify right side
    519,772.23x = 287,750,046,921.37
  5. Step 5: Solve for x
    x = 287,750,046,921.37/519,772.23
  6. Step 6: Final answer
    x = 553,607.97

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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.