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Finding the Fourth Proportional to 603,670.92, 905,344.38 and 287,498.76

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Solution

The fourth proportional to 603,670.92, 905,344.38 and 287,498.76 is: 431,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,670.92 : 905,344.38 = 287,498.76 : x
  2. Step 2: Convert to fraction form
    603,670.92/905,344.38 = 287,498.76/x
  3. Step 3: Cross multiply
    603,670.92x = 905,344.38 × 287,498.76
  4. Step 4: Simplify right side
    603,670.92x = 260,285,386,622.97
  5. Step 5: Solve for x
    x = 260,285,386,622.97/603,670.92
  6. Step 6: Final answer
    x = 431,170.99

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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.