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Finding the Fourth Proportional to 766,625.69, 1,057,950.45 and 422,473.97

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Solution

The fourth proportional to 766,625.69, 1,057,950.45 and 422,473.97 is: 583,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,625.69 : 1,057,950.45 = 422,473.97 : x
  2. Step 2: Convert to fraction form
    766,625.69/1,057,950.45 = 422,473.97/x
  3. Step 3: Cross multiply
    766,625.69x = 1,057,950.45 × 422,473.97
  4. Step 4: Simplify right side
    766,625.69x = 446,956,521,385.03
  5. Step 5: Solve for x
    x = 446,956,521,385.03/766,625.69
  6. Step 6: Final answer
    x = 583,017.93

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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.