Home / 643,622.47-888,371.31-401,759.38

Finding the Fourth Proportional to 643,622.47, 888,371.31 and 401,759.38

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Solution

The fourth proportional to 643,622.47, 888,371.31 and 401,759.38 is: 554,535.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,622.47 : 888,371.31 = 401,759.38 : x
  2. Step 2: Convert to fraction form
    643,622.47/888,371.31 = 401,759.38/x
  3. Step 3: Cross multiply
    643,622.47x = 888,371.31 × 401,759.38
  4. Step 4: Simplify right side
    643,622.47x = 356,911,506,715.39
  5. Step 5: Solve for x
    x = 356,911,506,715.39/643,622.47
  6. Step 6: Final answer
    x = 554,535.50

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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.