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Finding the Fourth Proportional to 630,887.46, 870,639.62 and 344,409.71

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Solution

The fourth proportional to 630,887.46, 870,639.62 and 344,409.71 is: 475,293.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,887.46 : 870,639.62 = 344,409.71 : x
  2. Step 2: Convert to fraction form
    630,887.46/870,639.62 = 344,409.71/x
  3. Step 3: Cross multiply
    630,887.46x = 870,639.62 × 344,409.71
  4. Step 4: Simplify right side
    630,887.46x = 299,856,732,963.46
  5. Step 5: Solve for x
    x = 299,856,732,963.46/630,887.46
  6. Step 6: Final answer
    x = 475,293.54

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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.