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Finding the Fourth Proportional to 636,823.61, 878,942.19 and 365,073.98

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Solution

The fourth proportional to 636,823.61, 878,942.19 and 365,073.98 is: 503,874.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,823.61 : 878,942.19 = 365,073.98 : x
  2. Step 2: Convert to fraction form
    636,823.61/878,942.19 = 365,073.98/x
  3. Step 3: Cross multiply
    636,823.61x = 878,942.19 × 365,073.98
  4. Step 4: Simplify right side
    636,823.61x = 320,878,919,098.51
  5. Step 5: Solve for x
    x = 320,878,919,098.51/636,823.61
  6. Step 6: Final answer
    x = 503,874.10

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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.