Home / 856,624.50-1,182,143.19-469,378.39

Finding the Fourth Proportional to 856,624.50, 1,182,143.19 and 469,378.39

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Solution

The fourth proportional to 856,624.50, 1,182,143.19 and 469,378.39 is: 647,742.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,624.50 : 1,182,143.19 = 469,378.39 : x
  2. Step 2: Convert to fraction form
    856,624.50/1,182,143.19 = 469,378.39/x
  3. Step 3: Cross multiply
    856,624.50x = 1,182,143.19 × 469,378.39
  4. Step 4: Simplify right side
    856,624.50x = 554,872,467,271.66
  5. Step 5: Solve for x
    x = 554,872,467,271.66/856,624.50
  6. Step 6: Final answer
    x = 647,742.93

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Double scale
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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.