Home / 915,785.28-1,263,861.30-508,018.50

Finding the Fourth Proportional to 915,785.28, 1,263,861.30 and 508,018.50

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Solution

The fourth proportional to 915,785.28, 1,263,861.30 and 508,018.50 is: 701,108.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,785.28 : 1,263,861.30 = 508,018.50 : x
  2. Step 2: Convert to fraction form
    915,785.28/1,263,861.30 = 508,018.50/x
  3. Step 3: Cross multiply
    915,785.28x = 1,263,861.30 × 508,018.50
  4. Step 4: Simplify right side
    915,785.28x = 642,064,921,834.05
  5. Step 5: Solve for x
    x = 642,064,921,834.05/915,785.28
  6. Step 6: Final answer
    x = 701,108.59

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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.