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Finding the Fourth Proportional to 554,807.69, 765,627.05 and 309,796.23

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Solution

The fourth proportional to 554,807.69, 765,627.05 and 309,796.23 is: 427,514.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,807.69 : 765,627.05 = 309,796.23 : x
  2. Step 2: Convert to fraction form
    554,807.69/765,627.05 = 309,796.23/x
  3. Step 3: Cross multiply
    554,807.69x = 765,627.05 × 309,796.23
  4. Step 4: Simplify right side
    554,807.69x = 237,188,373,676.02
  5. Step 5: Solve for x
    x = 237,188,373,676.02/554,807.69
  6. Step 6: Final answer
    x = 427,514.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.