Home / 765,810.51-1,057,145.58-545,190.21

Finding the Fourth Proportional to 765,810.51, 1,057,145.58 and 545,190.21

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Solution

The fourth proportional to 765,810.51, 1,057,145.58 and 545,190.21 is: 752,595.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,810.51 : 1,057,145.58 = 545,190.21 : x
  2. Step 2: Convert to fraction form
    765,810.51/1,057,145.58 = 545,190.21/x
  3. Step 3: Cross multiply
    765,810.51x = 1,057,145.58 × 545,190.21
  4. Step 4: Simplify right side
    765,810.51x = 576,345,420,760.77
  5. Step 5: Solve for x
    x = 576,345,420,760.77/765,810.51
  6. Step 6: Final answer
    x = 752,595.34

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Double scale
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Similar ratio
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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.