Home / 915,814.72-1,263,953.36-508,007.20

Finding the Fourth Proportional to 915,814.72, 1,263,953.36 and 508,007.20

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Solution

The fourth proportional to 915,814.72, 1,263,953.36 and 508,007.20 is: 701,121.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,814.72 : 1,263,953.36 = 508,007.20 : x
  2. Step 2: Convert to fraction form
    915,814.72/1,263,953.36 = 508,007.20/x
  3. Step 3: Cross multiply
    915,814.72x = 1,263,953.36 × 508,007.20
  4. Step 4: Simplify right side
    915,814.72x = 642,097,407,344.19
  5. Step 5: Solve for x
    x = 642,097,407,344.19/915,814.72
  6. Step 6: Final answer
    x = 701,121.52

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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.