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Finding the Fourth Proportional to 439,783.60, 659,675.40 and 395,460.40

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Solution

The fourth proportional to 439,783.60, 659,675.40 and 395,460.40 is: 593,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,783.60 : 659,675.40 = 395,460.40 : x
  2. Step 2: Convert to fraction form
    439,783.60/659,675.40 = 395,460.40/x
  3. Step 3: Cross multiply
    439,783.60x = 659,675.40 × 395,460.40
  4. Step 4: Simplify right side
    439,783.60x = 260,875,497,554.16
  5. Step 5: Solve for x
    x = 260,875,497,554.16/439,783.60
  6. Step 6: Final answer
    x = 593,190.60

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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.