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Finding the Fourth Proportional to 572,571.40, 858,857.10 and 520,083.40

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Solution

The fourth proportional to 572,571.40, 858,857.10 and 520,083.40 is: 780,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,571.40 : 858,857.10 = 520,083.40 : x
  2. Step 2: Convert to fraction form
    572,571.40/858,857.10 = 520,083.40/x
  3. Step 3: Cross multiply
    572,571.40x = 858,857.10 × 520,083.40
  4. Step 4: Simplify right side
    572,571.40x = 446,677,320,682.14
  5. Step 5: Solve for x
    x = 446,677,320,682.14/572,571.40
  6. Step 6: Final answer
    x = 780,125.10

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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.