Home / 647,190.29-971,286.68-521,139.19

Finding the Fourth Proportional to 647,190.29, 971,286.68 and 521,139.19

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Solution

The fourth proportional to 647,190.29, 971,286.68 and 521,139.19 is: 782,112.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,190.29 : 971,286.68 = 521,139.19 : x
  2. Step 2: Convert to fraction form
    647,190.29/971,286.68 = 521,139.19/x
  3. Step 3: Cross multiply
    647,190.29x = 971,286.68 × 521,139.19
  4. Step 4: Simplify right side
    647,190.29x = 506,175,552,547.62
  5. Step 5: Solve for x
    x = 506,175,552,547.62/647,190.29
  6. Step 6: Final answer
    x = 782,112.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.