Home / 527,128.55-727,437.72-285,411.29

Finding the Fourth Proportional to 527,128.55, 727,437.72 and 285,411.29

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Solution

The fourth proportional to 527,128.55, 727,437.72 and 285,411.29 is: 393,867.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,128.55 : 727,437.72 = 285,411.29 : x
  2. Step 2: Convert to fraction form
    527,128.55/727,437.72 = 285,411.29/x
  3. Step 3: Cross multiply
    527,128.55x = 727,437.72 × 285,411.29
  4. Step 4: Simplify right side
    527,128.55x = 207,618,934,422.67
  5. Step 5: Solve for x
    x = 207,618,934,422.67/527,128.55
  6. Step 6: Final answer
    x = 393,867.75

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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.