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Finding the Fourth Proportional to 570,448.56, 787,248 and 328,770.48

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Solution

The fourth proportional to 570,448.56, 787,248 and 328,770.48 is: 453,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,448.56 : 787,248 = 328,770.48 : x
  2. Step 2: Convert to fraction form
    570,448.56/787,248 = 328,770.48/x
  3. Step 3: Cross multiply
    570,448.56x = 787,248 × 328,770.48
  4. Step 4: Simplify right side
    570,448.56x = 258,823,902,839.04
  5. Step 5: Solve for x
    x = 258,823,902,839.04/570,448.56
  6. Step 6: Final answer
    x = 453,719.97

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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.