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Finding the Fourth Proportional to 526,018.36, 726,169.31 and 345,007.66

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Solution

The fourth proportional to 526,018.36, 726,169.31 and 345,007.66 is: 476,283.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,018.36 : 726,169.31 = 345,007.66 : x
  2. Step 2: Convert to fraction form
    526,018.36/726,169.31 = 345,007.66/x
  3. Step 3: Cross multiply
    526,018.36x = 726,169.31 × 345,007.66
  4. Step 4: Simplify right side
    526,018.36x = 250,533,974,406.92
  5. Step 5: Solve for x
    x = 250,533,974,406.92/526,018.36
  6. Step 6: Final answer
    x = 476,283.71

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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.