Home / 636,749.52-878,634.57-430,466.82

Finding the Fourth Proportional to 636,749.52, 878,634.57 and 430,466.82

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Solution

The fourth proportional to 636,749.52, 878,634.57 and 430,466.82 is: 593,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,749.52 : 878,634.57 = 430,466.82 : x
  2. Step 2: Convert to fraction form
    636,749.52/878,634.57 = 430,466.82/x
  3. Step 3: Cross multiply
    636,749.52x = 878,634.57 × 430,466.82
  4. Step 4: Simplify right side
    636,749.52x = 378,223,029,289.97
  5. Step 5: Solve for x
    x = 378,223,029,289.97/636,749.52
  6. Step 6: Final answer
    x = 593,990.29

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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.