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Finding the Fourth Proportional to 495,241.20, 742,205.70 and 438,816.60

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Solution

The fourth proportional to 495,241.20, 742,205.70 and 438,816.60 is: 657,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,241.20 : 742,205.70 = 438,816.60 : x
  2. Step 2: Convert to fraction form
    495,241.20/742,205.70 = 438,816.60/x
  3. Step 3: Cross multiply
    495,241.20x = 742,205.70 × 438,816.60
  4. Step 4: Simplify right side
    495,241.20x = 325,692,181,774.62
  5. Step 5: Solve for x
    x = 325,692,181,774.62/495,241.20
  6. Step 6: Final answer
    x = 657,643.55

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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.