Home / 643,318.59-887,819.91-371,436.21

Finding the Fourth Proportional to 643,318.59, 887,819.91 and 371,436.21

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Solution

The fourth proportional to 643,318.59, 887,819.91 and 371,436.21 is: 512,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,318.59 : 887,819.91 = 371,436.21 : x
  2. Step 2: Convert to fraction form
    643,318.59/887,819.91 = 371,436.21/x
  3. Step 3: Cross multiply
    643,318.59x = 887,819.91 × 371,436.21
  4. Step 4: Simplify right side
    643,318.59x = 329,768,462,532.94
  5. Step 5: Solve for x
    x = 329,768,462,532.94/643,318.59
  6. Step 6: Final answer
    x = 512,605.21

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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.