Home / 769,712.40-1,062,232.65-511,142.33

Finding the Fourth Proportional to 769,712.40, 1,062,232.65 and 511,142.33

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Solution

The fourth proportional to 769,712.40, 1,062,232.65 and 511,142.33 is: 705,396.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,712.40 : 1,062,232.65 = 511,142.33 : x
  2. Step 2: Convert to fraction form
    769,712.40/1,062,232.65 = 511,142.33/x
  3. Step 3: Cross multiply
    769,712.40x = 1,062,232.65 × 511,142.33
  4. Step 4: Simplify right side
    769,712.40x = 542,952,066,411.91
  5. Step 5: Solve for x
    x = 542,952,066,411.91/769,712.40
  6. Step 6: Final answer
    x = 705,396.02

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Double scale
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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.