Home / 645,140.97-962,877.92-634,498.52

Finding the Fourth Proportional to 645,140.97, 962,877.92 and 634,498.52

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Solution

The fourth proportional to 645,140.97, 962,877.92 and 634,498.52 is: 946,993.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,140.97 : 962,877.92 = 634,498.52 : x
  2. Step 2: Convert to fraction form
    645,140.97/962,877.92 = 634,498.52/x
  3. Step 3: Cross multiply
    645,140.97x = 962,877.92 × 634,498.52
  4. Step 4: Simplify right side
    645,140.97x = 610,944,607,193.80
  5. Step 5: Solve for x
    x = 610,944,607,193.80/645,140.97
  6. Step 6: Final answer
    x = 946,993.97

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.