Home / 643,268.25-887,129.15-401,573.16

Finding the Fourth Proportional to 643,268.25, 887,129.15 and 401,573.16

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Solution

The fourth proportional to 643,268.25, 887,129.15 and 401,573.16 is: 553,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,268.25 : 887,129.15 = 401,573.16 : x
  2. Step 2: Convert to fraction form
    643,268.25/887,129.15 = 401,573.16/x
  3. Step 3: Cross multiply
    643,268.25x = 887,129.15 × 401,573.16
  4. Step 4: Simplify right side
    643,268.25x = 356,247,254,085.75
  5. Step 5: Solve for x
    x = 356,247,254,085.75/643,268.25
  6. Step 6: Final answer
    x = 553,808.23

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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.