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Finding the Fourth Proportional to 695,070.16, 958,911.72 and 422,919.88

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Solution

The fourth proportional to 695,070.16, 958,911.72 and 422,919.88 is: 583,455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,070.16 : 958,911.72 = 422,919.88 : x
  2. Step 2: Convert to fraction form
    695,070.16/958,911.72 = 422,919.88/x
  3. Step 3: Cross multiply
    695,070.16x = 958,911.72 × 422,919.88
  4. Step 4: Simplify right side
    695,070.16x = 405,542,829,552.99
  5. Step 5: Solve for x
    x = 405,542,829,552.99/695,070.16
  6. Step 6: Final answer
    x = 583,455.96

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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.