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Finding the Fourth Proportional to 3,281,578.81, 4,922,368.22 and 885,423.45

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Solution

The fourth proportional to 3,281,578.81, 4,922,368.22 and 885,423.45 is: 1,328,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281,578.81 : 4,922,368.22 = 885,423.45 : x
  2. Step 2: Convert to fraction form
    3,281,578.81/4,922,368.22 = 885,423.45/x
  3. Step 3: Cross multiply
    3,281,578.81x = 4,922,368.22 × 885,423.45
  4. Step 4: Simplify right side
    3,281,578.81x = 4,358,380,251,522.76
  5. Step 5: Solve for x
    x = 4,358,380,251,522.76/3,281,578.81
  6. Step 6: Final answer
    x = 1,328,135.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.