Home / 913,121.05-1,260,144.12-505,216.27

Finding the Fourth Proportional to 913,121.05, 1,260,144.12 and 505,216.27

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Solution

The fourth proportional to 913,121.05, 1,260,144.12 and 505,216.27 is: 697,218.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,121.05 : 1,260,144.12 = 505,216.27 : x
  2. Step 2: Convert to fraction form
    913,121.05/1,260,144.12 = 505,216.27/x
  3. Step 3: Cross multiply
    913,121.05x = 1,260,144.12 × 505,216.27
  4. Step 4: Simplify right side
    913,121.05x = 636,645,311,968.83
  5. Step 5: Solve for x
    x = 636,645,311,968.83/913,121.05
  6. Step 6: Final answer
    x = 697,218.96

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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.