Home / 913,119.30-1,260,141.71-505,214.51

Finding the Fourth Proportional to 913,119.30, 1,260,141.71 and 505,214.51

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Solution

The fourth proportional to 913,119.30, 1,260,141.71 and 505,214.51 is: 697,216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,119.30 : 1,260,141.71 = 505,214.51 : x
  2. Step 2: Convert to fraction form
    913,119.30/1,260,141.71 = 505,214.51/x
  3. Step 3: Cross multiply
    913,119.30x = 1,260,141.71 × 505,214.51
  4. Step 4: Simplify right side
    913,119.30x = 636,641,867,721.43
  5. Step 5: Solve for x
    x = 636,641,867,721.43/913,119.30
  6. Step 6: Final answer
    x = 697,216.53

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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.