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Finding the Fourth Proportional to 523,814.25, 722,829.65 and 308,905.05

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Solution

The fourth proportional to 523,814.25, 722,829.65 and 308,905.05 is: 426,268.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,814.25 : 722,829.65 = 308,905.05 : x
  2. Step 2: Convert to fraction form
    523,814.25/722,829.65 = 308,905.05/x
  3. Step 3: Cross multiply
    523,814.25x = 722,829.65 × 308,905.05
  4. Step 4: Simplify right side
    523,814.25x = 223,285,727,630.21
  5. Step 5: Solve for x
    x = 223,285,727,630.21/523,814.25
  6. Step 6: Final answer
    x = 426,268.91

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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.