Home / 823,840.63-1,234,981.78-621,122.20

Finding the Fourth Proportional to 823,840.63, 1,234,981.78 and 621,122.20

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Solution

The fourth proportional to 823,840.63, 1,234,981.78 and 621,122.20 is: 931,095.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,840.63 : 1,234,981.78 = 621,122.20 : x
  2. Step 2: Convert to fraction form
    823,840.63/1,234,981.78 = 621,122.20/x
  3. Step 3: Cross multiply
    823,840.63x = 1,234,981.78 × 621,122.20
  4. Step 4: Simplify right side
    823,840.63x = 767,074,600,153.52
  5. Step 5: Solve for x
    x = 767,074,600,153.52/823,840.63
  6. Step 6: Final answer
    x = 931,095.86

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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.