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Finding the Fourth Proportional to 630,863.74, 868,382.22 and 550,148.86

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Solution

The fourth proportional to 630,863.74, 868,382.22 and 550,148.86 is: 757,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,863.74 : 868,382.22 = 550,148.86 : x
  2. Step 2: Convert to fraction form
    630,863.74/868,382.22 = 550,148.86/x
  3. Step 3: Cross multiply
    630,863.74x = 868,382.22 × 550,148.86
  4. Step 4: Simplify right side
    630,863.74x = 477,739,488,431.22
  5. Step 5: Solve for x
    x = 477,739,488,431.22/630,863.74
  6. Step 6: Final answer
    x = 757,278.41

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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.