Home / 869,800.78-1,304,176.92-389,941.77

Finding the Fourth Proportional to 869,800.78, 1,304,176.92 and 389,941.77

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Solution

The fourth proportional to 869,800.78, 1,304,176.92 and 389,941.77 is: 584,677.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,800.78 : 1,304,176.92 = 389,941.77 : x
  2. Step 2: Convert to fraction form
    869,800.78/1,304,176.92 = 389,941.77/x
  3. Step 3: Cross multiply
    869,800.78x = 1,304,176.92 × 389,941.77
  4. Step 4: Simplify right side
    869,800.78x = 508,553,056,577.95
  5. Step 5: Solve for x
    x = 508,553,056,577.95/869,800.78
  6. Step 6: Final answer
    x = 584,677.63

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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.