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Finding the Fourth Proportional to 425,633.10, 637,672.05 and 346,317.90

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Solution

The fourth proportional to 425,633.10, 637,672.05 and 346,317.90 is: 518,844.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,633.10 : 637,672.05 = 346,317.90 : x
  2. Step 2: Convert to fraction form
    425,633.10/637,672.05 = 346,317.90/x
  3. Step 3: Cross multiply
    425,633.10x = 637,672.05 × 346,317.90
  4. Step 4: Simplify right side
    425,633.10x = 220,837,245,244.70
  5. Step 5: Solve for x
    x = 220,837,245,244.70/425,633.10
  6. Step 6: Final answer
    x = 518,844.15

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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.