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Finding the Fourth Proportional to 508,021.70, 760,537.71 and 339,123.10

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Solution

The fourth proportional to 508,021.70, 760,537.71 and 339,123.10 is: 507,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,021.70 : 760,537.71 = 339,123.10 : x
  2. Step 2: Convert to fraction form
    508,021.70/760,537.71 = 339,123.10/x
  3. Step 3: Cross multiply
    508,021.70x = 760,537.71 × 339,123.10
  4. Step 4: Simplify right side
    508,021.70x = 257,915,905,882.10
  5. Step 5: Solve for x
    x = 257,915,905,882.10/508,021.70
  6. Step 6: Final answer
    x = 507,686.79

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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.