Home / 643,555.59-888,147.09-371,673.15

Finding the Fourth Proportional to 643,555.59, 888,147.09 and 371,673.15

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Solution

The fourth proportional to 643,555.59, 888,147.09 and 371,673.15 is: 512,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,555.59 : 888,147.09 = 371,673.15 : x
  2. Step 2: Convert to fraction form
    643,555.59/888,147.09 = 371,673.15/x
  3. Step 3: Cross multiply
    643,555.59x = 888,147.09 × 371,673.15
  4. Step 4: Simplify right side
    643,555.59x = 330,100,426,603.63
  5. Step 5: Solve for x
    x = 330,100,426,603.63/643,555.59
  6. Step 6: Final answer
    x = 512,932.27

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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.