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Finding the Fourth Proportional to 636,384.80, 878,226.05 and 346,012.97

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Solution

The fourth proportional to 636,384.80, 878,226.05 and 346,012.97 is: 477,506.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,384.80 : 878,226.05 = 346,012.97 : x
  2. Step 2: Convert to fraction form
    636,384.80/878,226.05 = 346,012.97/x
  3. Step 3: Cross multiply
    636,384.80x = 878,226.05 × 346,012.97
  4. Step 4: Simplify right side
    636,384.80x = 303,877,598,419.45
  5. Step 5: Solve for x
    x = 303,877,598,419.45/636,384.80
  6. Step 6: Final answer
    x = 477,506.06

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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.