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Finding the Fourth Proportional to 538,564.40, 807,846.60 and 358,938.80

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Solution

The fourth proportional to 538,564.40, 807,846.60 and 358,938.80 is: 538,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,564.40 : 807,846.60 = 358,938.80 : x
  2. Step 2: Convert to fraction form
    538,564.40/807,846.60 = 358,938.80/x
  3. Step 3: Cross multiply
    538,564.40x = 807,846.60 × 358,938.80
  4. Step 4: Simplify right side
    538,564.40x = 289,967,489,188.08
  5. Step 5: Solve for x
    x = 289,967,489,188.08/538,564.40
  6. Step 6: Final answer
    x = 538,408.20

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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.