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Finding the Fourth Proportional to 579,307.67, 799,491.69 and 321,210.23

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Solution

The fourth proportional to 579,307.67, 799,491.69 and 321,210.23 is: 443,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,307.67 : 799,491.69 = 321,210.23 : x
  2. Step 2: Convert to fraction form
    579,307.67/799,491.69 = 321,210.23/x
  3. Step 3: Cross multiply
    579,307.67x = 799,491.69 × 321,210.23
  4. Step 4: Simplify right side
    579,307.67x = 256,804,905,630.53
  5. Step 5: Solve for x
    x = 256,804,905,630.53/579,307.67
  6. Step 6: Final answer
    x = 443,296.23

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.