Home / 990,107.87-1,366,351.49-537,398.87

Finding the Fourth Proportional to 990,107.87, 1,366,351.49 and 537,398.87

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Solution

The fourth proportional to 990,107.87, 1,366,351.49 and 537,398.87 is: 741,611.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,107.87 : 1,366,351.49 = 537,398.87 : x
  2. Step 2: Convert to fraction form
    990,107.87/1,366,351.49 = 537,398.87/x
  3. Step 3: Cross multiply
    990,107.87x = 1,366,351.49 × 537,398.87
  4. Step 4: Simplify right side
    990,107.87x = 734,275,746,748.82
  5. Step 5: Solve for x
    x = 734,275,746,748.82/990,107.87
  6. Step 6: Final answer
    x = 741,611.87

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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.