Home / 812,469.21-1,121,205.80-468,302.82

Finding the Fourth Proportional to 812,469.21, 1,121,205.80 and 468,302.82

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Solution

The fourth proportional to 812,469.21, 1,121,205.80 and 468,302.82 is: 646,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,469.21 : 1,121,205.80 = 468,302.82 : x
  2. Step 2: Convert to fraction form
    812,469.21/1,121,205.80 = 468,302.82/x
  3. Step 3: Cross multiply
    812,469.21x = 1,121,205.80 × 468,302.82
  4. Step 4: Simplify right side
    812,469.21x = 525,063,835,598.84
  5. Step 5: Solve for x
    x = 525,063,835,598.84/812,469.21
  6. Step 6: Final answer
    x = 646,256.90

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Double scale
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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.