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Finding the Fourth Proportional to 520,961.65, 718,237.89 and 375,645.83

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Solution

The fourth proportional to 520,961.65, 718,237.89 and 375,645.83 is: 517,894.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,961.65 : 718,237.89 = 375,645.83 : x
  2. Step 2: Convert to fraction form
    520,961.65/718,237.89 = 375,645.83/x
  3. Step 3: Cross multiply
    520,961.65x = 718,237.89 × 375,645.83
  4. Step 4: Simplify right side
    520,961.65x = 269,803,064,735.31
  5. Step 5: Solve for x
    x = 269,803,064,735.31/520,961.65
  6. Step 6: Final answer
    x = 517,894.29

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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.