Home / 481,293.27-664,634.77-309,509.55

Finding the Fourth Proportional to 481,293.27, 664,634.77 and 309,509.55

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Solution

The fourth proportional to 481,293.27, 664,634.77 and 309,509.55 is: 427,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,293.27 : 664,634.77 = 309,509.55 : x
  2. Step 2: Convert to fraction form
    481,293.27/664,634.77 = 309,509.55/x
  3. Step 3: Cross multiply
    481,293.27x = 664,634.77 × 309,509.55
  4. Step 4: Simplify right side
    481,293.27x = 205,710,807,803.28
  5. Step 5: Solve for x
    x = 205,710,807,803.28/481,293.27
  6. Step 6: Final answer
    x = 427,412.60

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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.