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Finding the Fourth Proportional to 439,611.60, 657,667.80 and 381,097.20

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Solution

The fourth proportional to 439,611.60, 657,667.80 and 381,097.20 is: 570,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,611.60 : 657,667.80 = 381,097.20 : x
  2. Step 2: Convert to fraction form
    439,611.60/657,667.80 = 381,097.20/x
  3. Step 3: Cross multiply
    439,611.60x = 657,667.80 × 381,097.20
  4. Step 4: Simplify right side
    439,611.60x = 250,635,357,110.16
  5. Step 5: Solve for x
    x = 250,635,357,110.16/439,611.60
  6. Step 6: Final answer
    x = 570,129.08

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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.