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Finding the Fourth Proportional to 561,559.56, 772,999.38 and 489,814.62

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Solution

The fourth proportional to 561,559.56, 772,999.38 and 489,814.62 is: 674,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,559.56 : 772,999.38 = 489,814.62 : x
  2. Step 2: Convert to fraction form
    561,559.56/772,999.38 = 489,814.62/x
  3. Step 3: Cross multiply
    561,559.56x = 772,999.38 × 489,814.62
  4. Step 4: Simplify right side
    561,559.56x = 378,626,397,574.94
  5. Step 5: Solve for x
    x = 378,626,397,574.94/561,559.56
  6. Step 6: Final answer
    x = 674,240.85

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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.