Home / 781,826.10-1,078,363.83-717,503.07

Finding the Fourth Proportional to 781,826.10, 1,078,363.83 and 717,503.07

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Solution

The fourth proportional to 781,826.10, 1,078,363.83 and 717,503.07 is: 989,643.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,826.10 : 1,078,363.83 = 717,503.07 : x
  2. Step 2: Convert to fraction form
    781,826.10/1,078,363.83 = 717,503.07/x
  3. Step 3: Cross multiply
    781,826.10x = 1,078,363.83 × 717,503.07
  4. Step 4: Simplify right side
    781,826.10x = 773,729,358,601.96
  5. Step 5: Solve for x
    x = 773,729,358,601.96/781,826.10
  6. Step 6: Final answer
    x = 989,643.81

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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.