Home / 695,112.72-959,209.13-389,137.46

Finding the Fourth Proportional to 695,112.72, 959,209.13 and 389,137.46

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Solution

The fourth proportional to 695,112.72, 959,209.13 and 389,137.46 is: 536,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,112.72 : 959,209.13 = 389,137.46 : x
  2. Step 2: Convert to fraction form
    695,112.72/959,209.13 = 389,137.46/x
  3. Step 3: Cross multiply
    695,112.72x = 959,209.13 × 389,137.46
  4. Step 4: Simplify right side
    695,112.72x = 373,264,197,715.28
  5. Step 5: Solve for x
    x = 373,264,197,715.28/695,112.72
  6. Step 6: Final answer
    x = 536,983.70

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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.