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Finding the Fourth Proportional to 439,728.60, 657,624.60 and 368,869.80

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Solution

The fourth proportional to 439,728.60, 657,624.60 and 368,869.80 is: 551,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,728.60 : 657,624.60 = 368,869.80 : x
  2. Step 2: Convert to fraction form
    439,728.60/657,624.60 = 368,869.80/x
  3. Step 3: Cross multiply
    439,728.60x = 657,624.60 × 368,869.80
  4. Step 4: Simplify right side
    439,728.60x = 242,577,854,677.08
  5. Step 5: Solve for x
    x = 242,577,854,677.08/439,728.60
  6. Step 6: Final answer
    x = 551,653.58

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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.