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Finding the Fourth Proportional to 669,762.54, 924,039.90 and 428,186.52

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Solution

The fourth proportional to 669,762.54, 924,039.90 and 428,186.52 is: 590,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,762.54 : 924,039.90 = 428,186.52 : x
  2. Step 2: Convert to fraction form
    669,762.54/924,039.90 = 428,186.52/x
  3. Step 3: Cross multiply
    669,762.54x = 924,039.90 × 428,186.52
  4. Step 4: Simplify right side
    669,762.54x = 395,661,429,122.15
  5. Step 5: Solve for x
    x = 395,661,429,122.15/669,762.54
  6. Step 6: Final answer
    x = 590,748.82

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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.