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Finding the Fourth Proportional to 530,420.39, 731,995.97 and 326,588.90

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Solution

The fourth proportional to 530,420.39, 731,995.97 and 326,588.90 is: 450,702.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,420.39 : 731,995.97 = 326,588.90 : x
  2. Step 2: Convert to fraction form
    530,420.39/731,995.97 = 326,588.90/x
  3. Step 3: Cross multiply
    530,420.39x = 731,995.97 × 326,588.90
  4. Step 4: Simplify right side
    530,420.39x = 239,061,753,353.81
  5. Step 5: Solve for x
    x = 239,061,753,353.81/530,420.39
  6. Step 6: Final answer
    x = 450,702.42

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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.