Home / 644,833.85-890,781.38-516,623.70

Finding the Fourth Proportional to 644,833.85, 890,781.38 and 516,623.70

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Solution

The fourth proportional to 644,833.85, 890,781.38 and 516,623.70 is: 713,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,833.85 : 890,781.38 = 516,623.70 : x
  2. Step 2: Convert to fraction form
    644,833.85/890,781.38 = 516,623.70/x
  3. Step 3: Cross multiply
    644,833.85x = 890,781.38 × 516,623.70
  4. Step 4: Simplify right side
    644,833.85x = 460,198,769,843.59
  5. Step 5: Solve for x
    x = 460,198,769,843.59/644,833.85
  6. Step 6: Final answer
    x = 713,670.31

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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.