Home / 643,283.59-887,150.24-401,588.41

Finding the Fourth Proportional to 643,283.59, 887,150.24 and 401,588.41

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Solution

The fourth proportional to 643,283.59, 887,150.24 and 401,588.41 is: 553,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,283.59 : 887,150.24 = 401,588.41 : x
  2. Step 2: Convert to fraction form
    643,283.59/887,150.24 = 401,588.41/x
  3. Step 3: Cross multiply
    643,283.59x = 887,150.24 × 401,588.41
  4. Step 4: Simplify right side
    643,283.59x = 356,269,252,304.78
  5. Step 5: Solve for x
    x = 356,269,252,304.78/643,283.59
  6. Step 6: Final answer
    x = 553,829.23

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1.5x scale

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.