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Finding the Fourth Proportional to 643,268.00, 887,710.41 and 356,788.10

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Solution

The fourth proportional to 643,268.00, 887,710.41 and 356,788.10 is: 492,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,268.00 : 887,710.41 = 356,788.10 : x
  2. Step 2: Convert to fraction form
    643,268.00/887,710.41 = 356,788.10/x
  3. Step 3: Cross multiply
    643,268.00x = 887,710.41 × 356,788.10
  4. Step 4: Simplify right side
    643,268.00x = 316,724,506,095.57
  5. Step 5: Solve for x
    x = 316,724,506,095.57/643,268.00
  6. Step 6: Final answer
    x = 492,367.89

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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.