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Finding the Fourth Proportional to 636,859.68, 878,766.18 and 364,875.18

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Solution

The fourth proportional to 636,859.68, 878,766.18 and 364,875.18 is: 503,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,859.68 : 878,766.18 = 364,875.18 : x
  2. Step 2: Convert to fraction form
    636,859.68/878,766.18 = 364,875.18/x
  3. Step 3: Cross multiply
    636,859.68x = 878,766.18 × 364,875.18
  4. Step 4: Simplify right side
    636,859.68x = 320,639,968,105.41
  5. Step 5: Solve for x
    x = 320,639,968,105.41/636,859.68
  6. Step 6: Final answer
    x = 503,470.35

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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.