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Finding the Fourth Proportional to 630,622.68, 870,277.64 and 344,161.20

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Solution

The fourth proportional to 630,622.68, 870,277.64 and 344,161.20 is: 474,952.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,622.68 : 870,277.64 = 344,161.20 : x
  2. Step 2: Convert to fraction form
    630,622.68/870,277.64 = 344,161.20/x
  3. Step 3: Cross multiply
    630,622.68x = 870,277.64 × 344,161.20
  4. Step 4: Simplify right side
    630,622.68x = 299,515,796,915.57
  5. Step 5: Solve for x
    x = 299,515,796,915.57/630,622.68
  6. Step 6: Final answer
    x = 474,952.47

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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.