Home / 646,457.78-892,173.77-359,977.78

Finding the Fourth Proportional to 646,457.78, 892,173.77 and 359,977.78

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Solution

The fourth proportional to 646,457.78, 892,173.77 and 359,977.78 is: 496,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,457.78 : 892,173.77 = 359,977.78 : x
  2. Step 2: Convert to fraction form
    646,457.78/892,173.77 = 359,977.78/x
  3. Step 3: Cross multiply
    646,457.78x = 892,173.77 × 359,977.78
  4. Step 4: Simplify right side
    646,457.78x = 321,162,733,098.83
  5. Step 5: Solve for x
    x = 321,162,733,098.83/646,457.78
  6. Step 6: Final answer
    x = 496,803.88

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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.