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Finding the Fourth Proportional to 630,958.64, 870,718.41 and 344,478.71

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Solution

The fourth proportional to 630,958.64, 870,718.41 and 344,478.71 is: 475,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,958.64 : 870,718.41 = 344,478.71 : x
  2. Step 2: Convert to fraction form
    630,958.64/870,718.41 = 344,478.71/x
  3. Step 3: Cross multiply
    630,958.64x = 870,718.41 × 344,478.71
  4. Step 4: Simplify right side
    630,958.64x = 299,943,956,826.85
  5. Step 5: Solve for x
    x = 299,943,956,826.85/630,958.64
  6. Step 6: Final answer
    x = 475,378.16

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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.