Home / 527,021.78-727,289.89-285,304.17

Finding the Fourth Proportional to 527,021.78, 727,289.89 and 285,304.17

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Solution

The fourth proportional to 527,021.78, 727,289.89 and 285,304.17 is: 393,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,021.78 : 727,289.89 = 285,304.17 : x
  2. Step 2: Convert to fraction form
    527,021.78/727,289.89 = 285,304.17/x
  3. Step 3: Cross multiply
    527,021.78x = 727,289.89 × 285,304.17
  4. Step 4: Simplify right side
    527,021.78x = 207,498,837,702.58
  5. Step 5: Solve for x
    x = 207,498,837,702.58/527,021.78
  6. Step 6: Final answer
    x = 393,719.66

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1.5x scale

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.