Home / 805,638.24-1,208,457.45-383,634.72

Finding the Fourth Proportional to 805,638.24, 1,208,457.45 and 383,634.72

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Solution

The fourth proportional to 805,638.24, 1,208,457.45 and 383,634.72 is: 575,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,638.24 : 1,208,457.45 = 383,634.72 : x
  2. Step 2: Convert to fraction form
    805,638.24/1,208,457.45 = 383,634.72/x
  3. Step 3: Cross multiply
    805,638.24x = 1,208,457.45 × 383,634.72
  4. Step 4: Simplify right side
    805,638.24x = 463,606,235,462.66
  5. Step 5: Solve for x
    x = 463,606,235,462.66/805,638.24
  6. Step 6: Final answer
    x = 575,452.12

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Double scale
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Similar ratio
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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.