Home / 571,531.79-857,188.37-287,143.53

Finding the Fourth Proportional to 571,531.79, 857,188.37 and 287,143.53

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Solution

The fourth proportional to 571,531.79, 857,188.37 and 287,143.53 is: 430,660.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,531.79 : 857,188.37 = 287,143.53 : x
  2. Step 2: Convert to fraction form
    571,531.79/857,188.37 = 287,143.53/x
  3. Step 3: Cross multiply
    571,531.79x = 857,188.37 × 287,143.53
  4. Step 4: Simplify right side
    571,531.79x = 246,136,093,001.03
  5. Step 5: Solve for x
    x = 246,136,093,001.03/571,531.79
  6. Step 6: Final answer
    x = 430,660.38

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.