Home / 809,434.50-1,115,981.19-663,703.35

Finding the Fourth Proportional to 809,434.50, 1,115,981.19 and 663,703.35

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Solution

The fourth proportional to 809,434.50, 1,115,981.19 and 663,703.35 is: 915,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,434.50 : 1,115,981.19 = 663,703.35 : x
  2. Step 2: Convert to fraction form
    809,434.50/1,115,981.19 = 663,703.35/x
  3. Step 3: Cross multiply
    809,434.50x = 1,115,981.19 × 663,703.35
  4. Step 4: Simplify right side
    809,434.50x = 740,680,454,339.99
  5. Step 5: Solve for x
    x = 740,680,454,339.99/809,434.50
  6. Step 6: Final answer
    x = 915,059.16

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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.