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Finding the Fourth Proportional to 528,770.89, 791,483.10 and 338,977.63

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Solution

The fourth proportional to 528,770.89, 791,483.10 and 338,977.63 is: 507,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,770.89 : 791,483.10 = 338,977.63 : x
  2. Step 2: Convert to fraction form
    528,770.89/791,483.10 = 338,977.63/x
  3. Step 3: Cross multiply
    528,770.89x = 791,483.10 × 338,977.63
  4. Step 4: Simplify right side
    528,770.89x = 268,295,065,423.05
  5. Step 5: Solve for x
    x = 268,295,065,423.05/528,770.89
  6. Step 6: Final answer
    x = 507,393.79

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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.