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Finding the Fourth Proportional to 425,877.20, 587,415.84 and 345,308.12

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Solution

The fourth proportional to 425,877.20, 587,415.84 and 345,308.12 is: 476,286.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,877.20 : 587,415.84 = 345,308.12 : x
  2. Step 2: Convert to fraction form
    425,877.20/587,415.84 = 345,308.12/x
  3. Step 3: Cross multiply
    425,877.20x = 587,415.84 × 345,308.12
  4. Step 4: Simplify right side
    425,877.20x = 202,839,459,368.62
  5. Step 5: Solve for x
    x = 202,839,459,368.62/425,877.20
  6. Step 6: Final answer
    x = 476,286.26

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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.