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Finding the Fourth Proportional to 425,640.10, 637,682.55 and 346,324.90

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Solution

The fourth proportional to 425,640.10, 637,682.55 and 346,324.90 is: 518,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,640.10 : 637,682.55 = 346,324.90 : x
  2. Step 2: Convert to fraction form
    425,640.10/637,682.55 = 346,324.90/x
  3. Step 3: Cross multiply
    425,640.10x = 637,682.55 × 346,324.90
  4. Step 4: Simplify right side
    425,640.10x = 220,845,345,360.50
  5. Step 5: Solve for x
    x = 220,845,345,360.50/425,640.10
  6. Step 6: Final answer
    x = 518,854.65

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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.