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Finding the Fourth Proportional to 382,737.72, 576,699.69 and 317,636.40

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Solution

The fourth proportional to 382,737.72, 576,699.69 and 317,636.40 is: 478,606.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,737.72 : 576,699.69 = 317,636.40 : x
  2. Step 2: Convert to fraction form
    382,737.72/576,699.69 = 317,636.40/x
  3. Step 3: Cross multiply
    382,737.72x = 576,699.69 × 317,636.40
  4. Step 4: Simplify right side
    382,737.72x = 183,180,813,412.72
  5. Step 5: Solve for x
    x = 183,180,813,412.72/382,737.72
  6. Step 6: Final answer
    x = 478,606.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.