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Finding the Fourth Proportional to 630,838.72, 870,532.68 and 344,358.46

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Solution

The fourth proportional to 630,838.72, 870,532.68 and 344,358.46 is: 475,201.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,838.72 : 870,532.68 = 344,358.46 : x
  2. Step 2: Convert to fraction form
    630,838.72/870,532.68 = 344,358.46/x
  3. Step 3: Cross multiply
    630,838.72x = 870,532.68 × 344,358.46
  4. Step 4: Simplify right side
    630,838.72x = 299,775,293,064.47
  5. Step 5: Solve for x
    x = 299,775,293,064.47/630,838.72
  6. Step 6: Final answer
    x = 475,201.16

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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.