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Finding the Fourth Proportional to 630,930.42, 870,696.54 and 344,451.60

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Solution

The fourth proportional to 630,930.42, 870,696.54 and 344,451.60 is: 475,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,930.42 : 870,696.54 = 344,451.60 : x
  2. Step 2: Convert to fraction form
    630,930.42/870,696.54 = 344,451.60/x
  3. Step 3: Cross multiply
    630,930.42x = 870,696.54 × 344,451.60
  4. Step 4: Simplify right side
    630,930.42x = 299,912,816,317.46
  5. Step 5: Solve for x
    x = 299,912,816,317.46/630,930.42
  6. Step 6: Final answer
    x = 475,350.07

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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.