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Finding the Fourth Proportional to 636,810.60, 878,766.72 and 350,323.32

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Solution

The fourth proportional to 636,810.60, 878,766.72 and 350,323.32 is: 483,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,810.60 : 878,766.72 = 350,323.32 : x
  2. Step 2: Convert to fraction form
    636,810.60/878,766.72 = 350,323.32/x
  3. Step 3: Cross multiply
    636,810.60x = 878,766.72 × 350,323.32
  4. Step 4: Simplify right side
    636,810.60x = 307,852,474,855.91
  5. Step 5: Solve for x
    x = 307,852,474,855.91/636,810.60
  6. Step 6: Final answer
    x = 483,428.63

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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.