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Finding the Fourth Proportional to 519,869.67, 779,804.51 and 220,343.55

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Solution

The fourth proportional to 519,869.67, 779,804.51 and 220,343.55 is: 330,515.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,869.67 : 779,804.51 = 220,343.55 : x
  2. Step 2: Convert to fraction form
    519,869.67/779,804.51 = 220,343.55/x
  3. Step 3: Cross multiply
    519,869.67x = 779,804.51 × 220,343.55
  4. Step 4: Simplify right side
    519,869.67x = 171,824,894,039.41
  5. Step 5: Solve for x
    x = 171,824,894,039.41/519,869.67
  6. Step 6: Final answer
    x = 330,515.33

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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.