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Finding the Fourth Proportional to 636,824.61, 878,943.57 and 365,074.98

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Solution

The fourth proportional to 636,824.61, 878,943.57 and 365,074.98 is: 503,875.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,824.61 : 878,943.57 = 365,074.98 : x
  2. Step 2: Convert to fraction form
    636,824.61/878,943.57 = 365,074.98/x
  3. Step 3: Cross multiply
    636,824.61x = 878,943.57 × 365,074.98
  4. Step 4: Simplify right side
    636,824.61x = 320,880,306,238.88
  5. Step 5: Solve for x
    x = 320,880,306,238.88/636,824.61
  6. Step 6: Final answer
    x = 503,875.48

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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.