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Finding the Fourth Proportional to 382,985.80, 574,478.70 and 303,670.60

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Solution

The fourth proportional to 382,985.80, 574,478.70 and 303,670.60 is: 455,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,985.80 : 574,478.70 = 303,670.60 : x
  2. Step 2: Convert to fraction form
    382,985.80/574,478.70 = 303,670.60/x
  3. Step 3: Cross multiply
    382,985.80x = 574,478.70 × 303,670.60
  4. Step 4: Simplify right side
    382,985.80x = 174,452,291,516.22
  5. Step 5: Solve for x
    x = 174,452,291,516.22/382,985.80
  6. Step 6: Final answer
    x = 455,505.90

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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.