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Finding the Fourth Proportional to 425,732.60, 637,821.30 and 346,417.40

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Solution

The fourth proportional to 425,732.60, 637,821.30 and 346,417.40 is: 518,993.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,732.60 : 637,821.30 = 346,417.40 : x
  2. Step 2: Convert to fraction form
    425,732.60/637,821.30 = 346,417.40/x
  3. Step 3: Cross multiply
    425,732.60x = 637,821.30 × 346,417.40
  4. Step 4: Simplify right side
    425,732.60x = 220,952,396,410.62
  5. Step 5: Solve for x
    x = 220,952,396,410.62/425,732.60
  6. Step 6: Final answer
    x = 518,993.37

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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.