Home / 990,137.28-1,366,405.29-537,428.28

Finding the Fourth Proportional to 990,137.28, 1,366,405.29 and 537,428.28

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Solution

The fourth proportional to 990,137.28, 1,366,405.29 and 537,428.28 is: 741,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,137.28 : 1,366,405.29 = 537,428.28 : x
  2. Step 2: Convert to fraction form
    990,137.28/1,366,405.29 = 537,428.28/x
  3. Step 3: Cross multiply
    990,137.28x = 1,366,405.29 × 537,428.28
  4. Step 4: Simplify right side
    990,137.28x = 734,344,844,787.60
  5. Step 5: Solve for x
    x = 734,344,844,787.60/990,137.28
  6. Step 6: Final answer
    x = 741,659.63

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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.