Home / 919,709.91-1,379,916-358,788.15

Finding the Fourth Proportional to 919,709.91, 1,379,916 and 358,788.15

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Solution

The fourth proportional to 919,709.91, 1,379,916 and 358,788.15 is: 538,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,709.91 : 1,379,916 = 358,788.15 : x
  2. Step 2: Convert to fraction form
    919,709.91/1,379,916 = 358,788.15/x
  3. Step 3: Cross multiply
    919,709.91x = 1,379,916 × 358,788.15
  4. Step 4: Simplify right side
    919,709.91x = 495,097,508,795.40
  5. Step 5: Solve for x
    x = 495,097,508,795.40/919,709.91
  6. Step 6: Final answer
    x = 538,319.21

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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.