Home / 818,821.83-1,129,959.06-456,237.87

Finding the Fourth Proportional to 818,821.83, 1,129,959.06 and 456,237.87

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Solution

The fourth proportional to 818,821.83, 1,129,959.06 and 456,237.87 is: 629,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,821.83 : 1,129,959.06 = 456,237.87 : x
  2. Step 2: Convert to fraction form
    818,821.83/1,129,959.06 = 456,237.87/x
  3. Step 3: Cross multiply
    818,821.83x = 1,129,959.06 × 456,237.87
  4. Step 4: Simplify right side
    818,821.83x = 515,530,114,721.60
  5. Step 5: Solve for x
    x = 515,530,114,721.60/818,821.83
  6. Step 6: Final answer
    x = 629,599.87

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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.