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Finding the Fourth Proportional to 438,438.60, 657,657.90 and 367,579.80

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Solution

The fourth proportional to 438,438.60, 657,657.90 and 367,579.80 is: 551,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,438.60 : 657,657.90 = 367,579.80 : x
  2. Step 2: Convert to fraction form
    438,438.60/657,657.90 = 367,579.80/x
  3. Step 3: Cross multiply
    438,438.60x = 657,657.90 × 367,579.80
  4. Step 4: Simplify right side
    438,438.60x = 241,741,759,350.42
  5. Step 5: Solve for x
    x = 241,741,759,350.42/438,438.60
  6. Step 6: Final answer
    x = 551,369.70

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1.5x scale

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.