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Finding the Fourth Proportional to 641,715.64, 885,567.86 and 351,346.04

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Solution

The fourth proportional to 641,715.64, 885,567.86 and 351,346.04 is: 484,857.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,715.64 : 885,567.86 = 351,346.04 : x
  2. Step 2: Convert to fraction form
    641,715.64/885,567.86 = 351,346.04/x
  3. Step 3: Cross multiply
    641,715.64x = 885,567.86 × 351,346.04
  4. Step 4: Simplify right side
    641,715.64x = 311,140,760,762.27
  5. Step 5: Solve for x
    x = 311,140,760,762.27/641,715.64
  6. Step 6: Final answer
    x = 484,857.69

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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.