Home / 643,268.12-887,710.60-356,788.22

Finding the Fourth Proportional to 643,268.12, 887,710.60 and 356,788.22

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Solution

The fourth proportional to 643,268.12, 887,710.60 and 356,788.22 is: 492,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,268.12 : 887,710.60 = 356,788.22 : x
  2. Step 2: Convert to fraction form
    643,268.12/887,710.60 = 356,788.22/x
  3. Step 3: Cross multiply
    643,268.12x = 887,710.60 × 356,788.22
  4. Step 4: Simplify right side
    643,268.12x = 316,724,684,849.13
  5. Step 5: Solve for x
    x = 316,724,684,849.13/643,268.12
  6. Step 6: Final answer
    x = 492,368.07

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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.