Home / 851,255.10-1,277,679.66-430,826.22

Finding the Fourth Proportional to 851,255.10, 1,277,679.66 and 430,826.22

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Solution

The fourth proportional to 851,255.10, 1,277,679.66 and 430,826.22 is: 646,642.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,255.10 : 1,277,679.66 = 430,826.22 : x
  2. Step 2: Convert to fraction form
    851,255.10/1,277,679.66 = 430,826.22/x
  3. Step 3: Cross multiply
    851,255.10x = 1,277,679.66 × 430,826.22
  4. Step 4: Simplify right side
    851,255.10x = 550,457,898,288.69
  5. Step 5: Solve for x
    x = 550,457,898,288.69/851,255.10
  6. Step 6: Final answer
    x = 646,642.70

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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.