Home / 520,849.82-719,018.45-391,837.53

Finding the Fourth Proportional to 520,849.82, 719,018.45 and 391,837.53

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Solution

The fourth proportional to 520,849.82, 719,018.45 and 391,837.53 is: 540,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,849.82 : 719,018.45 = 391,837.53 : x
  2. Step 2: Convert to fraction form
    520,849.82/719,018.45 = 391,837.53/x
  3. Step 3: Cross multiply
    520,849.82x = 719,018.45 × 391,837.53
  4. Step 4: Simplify right side
    520,849.82x = 281,738,413,472.43
  5. Step 5: Solve for x
    x = 281,738,413,472.43/520,849.82
  6. Step 6: Final answer
    x = 540,920.63

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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.