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Finding the Fourth Proportional to 547,427.40, 755,472.77 and 314,854.41

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Solution

The fourth proportional to 547,427.40, 755,472.77 and 314,854.41 is: 434,512.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,427.40 : 755,472.77 = 314,854.41 : x
  2. Step 2: Convert to fraction form
    547,427.40/755,472.77 = 314,854.41/x
  3. Step 3: Cross multiply
    547,427.40x = 755,472.77 × 314,854.41
  4. Step 4: Simplify right side
    547,427.40x = 237,863,927,917.78
  5. Step 5: Solve for x
    x = 237,863,927,917.78/547,427.40
  6. Step 6: Final answer
    x = 434,512.28

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1.5x scale

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.