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Finding the Fourth Proportional to 555,761.36, 766,940.64 and 314,038.74

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Solution

The fourth proportional to 555,761.36, 766,940.64 and 314,038.74 is: 433,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,761.36 : 766,940.64 = 314,038.74 : x
  2. Step 2: Convert to fraction form
    555,761.36/766,940.64 = 314,038.74/x
  3. Step 3: Cross multiply
    555,761.36x = 766,940.64 × 314,038.74
  4. Step 4: Simplify right side
    555,761.36x = 240,849,072,240.39
  5. Step 5: Solve for x
    x = 240,849,072,240.39/555,761.36
  6. Step 6: Final answer
    x = 433,367.79

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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.