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Finding the Fourth Proportional to 702,632.80, 969,764.48 and 400,826.72

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Solution

The fourth proportional to 702,632.80, 969,764.48 and 400,826.72 is: 553,215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,632.80 : 969,764.48 = 400,826.72 : x
  2. Step 2: Convert to fraction form
    702,632.80/969,764.48 = 400,826.72/x
  3. Step 3: Cross multiply
    702,632.80x = 969,764.48 × 400,826.72
  4. Step 4: Simplify right side
    702,632.80x = 388,707,515,690.91
  5. Step 5: Solve for x
    x = 388,707,515,690.91/702,632.80
  6. Step 6: Final answer
    x = 553,215.73

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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.