Home / 812,870.82-1,220,062.77-413,810.35

Finding the Fourth Proportional to 812,870.82, 1,220,062.77 and 413,810.35

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Solution

The fourth proportional to 812,870.82, 1,220,062.77 and 413,810.35 is: 621,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,870.82 : 1,220,062.77 = 413,810.35 : x
  2. Step 2: Convert to fraction form
    812,870.82/1,220,062.77 = 413,810.35/x
  3. Step 3: Cross multiply
    812,870.82x = 1,220,062.77 × 413,810.35
  4. Step 4: Simplify right side
    812,870.82x = 504,874,601,875.67
  5. Step 5: Solve for x
    x = 504,874,601,875.67/812,870.82
  6. Step 6: Final answer
    x = 621,100.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.