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Finding the Fourth Proportional to 641,847.87, 885,746.97 and 347,497.76

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Solution

The fourth proportional to 641,847.87, 885,746.97 and 347,497.76 is: 479,545.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,847.87 : 885,746.97 = 347,497.76 : x
  2. Step 2: Convert to fraction form
    641,847.87/885,746.97 = 347,497.76/x
  3. Step 3: Cross multiply
    641,847.87x = 885,746.97 × 347,497.76
  4. Step 4: Simplify right side
    641,847.87x = 307,795,090,216.16
  5. Step 5: Solve for x
    x = 307,795,090,216.16/641,847.87
  6. Step 6: Final answer
    x = 479,545.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.