Home / 526,815.82-726,399.79-389,193.86

Finding the Fourth Proportional to 526,815.82, 726,399.79 and 389,193.86

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Solution

The fourth proportional to 526,815.82, 726,399.79 and 389,193.86 is: 536,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,815.82 : 726,399.79 = 389,193.86 : x
  2. Step 2: Convert to fraction form
    526,815.82/726,399.79 = 389,193.86/x
  3. Step 3: Cross multiply
    526,815.82x = 726,399.79 × 389,193.86
  4. Step 4: Simplify right side
    526,815.82x = 282,710,334,541.29
  5. Step 5: Solve for x
    x = 282,710,334,541.29/526,815.82
  6. Step 6: Final answer
    x = 536,639.80

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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.