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Finding the Fourth Proportional to 620,018.57, 930,072.95 and 259,827.87

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Solution

The fourth proportional to 620,018.57, 930,072.95 and 259,827.87 is: 389,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,018.57 : 930,072.95 = 259,827.87 : x
  2. Step 2: Convert to fraction form
    620,018.57/930,072.95 = 259,827.87/x
  3. Step 3: Cross multiply
    620,018.57x = 930,072.95 × 259,827.87
  4. Step 4: Simplify right side
    620,018.57x = 241,658,869,542.32
  5. Step 5: Solve for x
    x = 241,658,869,542.32/620,018.57
  6. Step 6: Final answer
    x = 389,760.70

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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.