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Finding the Fourth Proportional to 630,748.49, 870,432.62 and 344,268.54

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Solution

The fourth proportional to 630,748.49, 870,432.62 and 344,268.54 is: 475,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,748.49 : 870,432.62 = 344,268.54 : x
  2. Step 2: Convert to fraction form
    630,748.49/870,432.62 = 344,268.54/x
  3. Step 3: Cross multiply
    630,748.49x = 870,432.62 × 344,268.54
  4. Step 4: Simplify right side
    630,748.49x = 299,662,565,534.43
  5. Step 5: Solve for x
    x = 299,662,565,534.43/630,748.49
  6. Step 6: Final answer
    x = 475,090.42

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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.