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Finding the Fourth Proportional to 636,123.80, 954,185.70 and 608,821.40

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Solution

The fourth proportional to 636,123.80, 954,185.70 and 608,821.40 is: 913,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,123.80 : 954,185.70 = 608,821.40 : x
  2. Step 2: Convert to fraction form
    636,123.80/954,185.70 = 608,821.40/x
  3. Step 3: Cross multiply
    636,123.80x = 954,185.70 × 608,821.40
  4. Step 4: Simplify right side
    636,123.80x = 580,928,673,733.98
  5. Step 5: Solve for x
    x = 580,928,673,733.98/636,123.80
  6. Step 6: Final answer
    x = 913,232.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.