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Finding the Fourth Proportional to 643,513.01, 888,048.06 and 357,032.41

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Solution

The fourth proportional to 643,513.01, 888,048.06 and 357,032.41 is: 492,704.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,513.01 : 888,048.06 = 357,032.41 : x
  2. Step 2: Convert to fraction form
    643,513.01/888,048.06 = 357,032.41/x
  3. Step 3: Cross multiply
    643,513.01x = 888,048.06 × 357,032.41
  4. Step 4: Simplify right side
    643,513.01x = 317,061,935,498.63
  5. Step 5: Solve for x
    x = 317,061,935,498.63/643,513.01
  6. Step 6: Final answer
    x = 492,704.78

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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.