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Finding the Fourth Proportional to 636,371.60, 878,196.28 and 374,738.32

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Solution

The fourth proportional to 636,371.60, 878,196.28 and 374,738.32 is: 517,140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,371.60 : 878,196.28 = 374,738.32 : x
  2. Step 2: Convert to fraction form
    636,371.60/878,196.28 = 374,738.32/x
  3. Step 3: Cross multiply
    636,371.60x = 878,196.28 × 374,738.32
  4. Step 4: Simplify right side
    636,371.60x = 329,093,798,597.45
  5. Step 5: Solve for x
    x = 329,093,798,597.45/636,371.60
  6. Step 6: Final answer
    x = 517,140.93

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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.