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Finding the Fourth Proportional to 680,764.28, 939,446.79 and 374,834.30

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Solution

The fourth proportional to 680,764.28, 939,446.79 and 374,834.30 is: 517,266.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,764.28 : 939,446.79 = 374,834.30 : x
  2. Step 2: Convert to fraction form
    680,764.28/939,446.79 = 374,834.30/x
  3. Step 3: Cross multiply
    680,764.28x = 939,446.79 × 374,834.30
  4. Step 4: Simplify right side
    680,764.28x = 352,136,879,916.90
  5. Step 5: Solve for x
    x = 352,136,879,916.90/680,764.28
  6. Step 6: Final answer
    x = 517,266.98

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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.