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Finding the Fourth Proportional to 425,317.80, 638,927.10 and 355,333.80

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Solution

The fourth proportional to 425,317.80, 638,927.10 and 355,333.80 is: 533,794.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,317.80 : 638,927.10 = 355,333.80 : x
  2. Step 2: Convert to fraction form
    425,317.80/638,927.10 = 355,333.80/x
  3. Step 3: Cross multiply
    425,317.80x = 638,927.10 × 355,333.80
  4. Step 4: Simplify right side
    425,317.80x = 227,032,394,365.98
  5. Step 5: Solve for x
    x = 227,032,394,365.98/425,317.80
  6. Step 6: Final answer
    x = 533,794.72

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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.