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Finding the Fourth Proportional to 530,353.44, 731,378.96 and 356,316.84

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Solution

The fourth proportional to 530,353.44, 731,378.96 and 356,316.84 is: 491,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,353.44 : 731,378.96 = 356,316.84 : x
  2. Step 2: Convert to fraction form
    530,353.44/731,378.96 = 356,316.84/x
  3. Step 3: Cross multiply
    530,353.44x = 731,378.96 × 356,316.84
  4. Step 4: Simplify right side
    530,353.44x = 260,602,639,869.69
  5. Step 5: Solve for x
    x = 260,602,639,869.69/530,353.44
  6. Step 6: Final answer
    x = 491,375.41

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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.