Home / 765,813.51-1,057,149.72-545,193.21

Finding the Fourth Proportional to 765,813.51, 1,057,149.72 and 545,193.21

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Solution

The fourth proportional to 765,813.51, 1,057,149.72 and 545,193.21 is: 752,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,813.51 : 1,057,149.72 = 545,193.21 : x
  2. Step 2: Convert to fraction form
    765,813.51/1,057,149.72 = 545,193.21/x
  3. Step 3: Cross multiply
    765,813.51x = 1,057,149.72 × 545,193.21
  4. Step 4: Simplify right side
    765,813.51x = 576,350,849,297.40
  5. Step 5: Solve for x
    x = 576,350,849,297.40/765,813.51
  6. Step 6: Final answer
    x = 752,599.48

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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.