Home / 663,636.23-915,895.75-377,199.37

Finding the Fourth Proportional to 663,636.23, 915,895.75 and 377,199.37

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Solution

The fourth proportional to 663,636.23, 915,895.75 and 377,199.37 is: 520,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,636.23 : 915,895.75 = 377,199.37 : x
  2. Step 2: Convert to fraction form
    663,636.23/915,895.75 = 377,199.37/x
  3. Step 3: Cross multiply
    663,636.23x = 915,895.75 × 377,199.37
  4. Step 4: Simplify right side
    663,636.23x = 345,475,301,502.05
  5. Step 5: Solve for x
    x = 345,475,301,502.05/663,636.23
  6. Step 6: Final answer
    x = 520,579.33

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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.