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Finding the Fourth Proportional to 565,505.44, 780,403.12 and 307,383.56

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Solution

The fourth proportional to 565,505.44, 780,403.12 and 307,383.56 is: 424,192.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,505.44 : 780,403.12 = 307,383.56 : x
  2. Step 2: Convert to fraction form
    565,505.44/780,403.12 = 307,383.56/x
  3. Step 3: Cross multiply
    565,505.44x = 780,403.12 × 307,383.56
  4. Step 4: Simplify right side
    565,505.44x = 239,883,089,260.71
  5. Step 5: Solve for x
    x = 239,883,089,260.71/565,505.44
  6. Step 6: Final answer
    x = 424,192.36

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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.