Home / 1,127,288.52-1,690,441.26-426,381

Finding the Fourth Proportional to 1,127,288.52, 1,690,441.26 and 426,381

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Solution

The fourth proportional to 1,127,288.52, 1,690,441.26 and 426,381 is: 639,385.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,288.52 : 1,690,441.26 = 426,381 : x
  2. Step 2: Convert to fraction form
    1,127,288.52/1,690,441.26 = 426,381/x
  3. Step 3: Cross multiply
    1,127,288.52x = 1,690,441.26 × 426,381
  4. Step 4: Simplify right side
    1,127,288.52x = 720,772,034,880.06
  5. Step 5: Solve for x
    x = 720,772,034,880.06/1,127,288.52
  6. Step 6: Final answer
    x = 639,385.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.