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Finding the Fourth Proportional to 640,114.53, 960,429.99 and 284,885.59

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Solution

The fourth proportional to 640,114.53, 960,429.99 and 284,885.59 is: 427,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,114.53 : 960,429.99 = 284,885.59 : x
  2. Step 2: Convert to fraction form
    640,114.53/960,429.99 = 284,885.59/x
  3. Step 3: Cross multiply
    640,114.53x = 960,429.99 × 284,885.59
  4. Step 4: Simplify right side
    640,114.53x = 273,612,664,354.84
  5. Step 5: Solve for x
    x = 273,612,664,354.84/640,114.53
  6. Step 6: Final answer
    x = 427,443.30

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1.5x scale

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.