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Finding the Fourth Proportional to 630,966.35, 870,729.01 and 344,486.44

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Solution

The fourth proportional to 630,966.35, 870,729.01 and 344,486.44 is: 475,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,966.35 : 870,729.01 = 344,486.44 : x
  2. Step 2: Convert to fraction form
    630,966.35/870,729.01 = 344,486.44/x
  3. Step 3: Cross multiply
    630,966.35x = 870,729.01 × 344,486.44
  4. Step 4: Simplify right side
    630,966.35x = 299,954,333,367.20
  5. Step 5: Solve for x
    x = 299,954,333,367.20/630,966.35
  6. Step 6: Final answer
    x = 475,388.80

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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.