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Finding the Fourth Proportional to 395,770.60, 593,655.90 and 393,437.80

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Solution

The fourth proportional to 395,770.60, 593,655.90 and 393,437.80 is: 590,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,770.60 : 593,655.90 = 393,437.80 : x
  2. Step 2: Convert to fraction form
    395,770.60/593,655.90 = 393,437.80/x
  3. Step 3: Cross multiply
    395,770.60x = 593,655.90 × 393,437.80
  4. Step 4: Simplify right side
    395,770.60x = 233,566,671,253.02
  5. Step 5: Solve for x
    x = 233,566,671,253.02/395,770.60
  6. Step 6: Final answer
    x = 590,156.70

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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.