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Finding the Fourth Proportional to 540,015.48, 745,190.49 and 322,469.64

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Solution

The fourth proportional to 540,015.48, 745,190.49 and 322,469.64 is: 444,989.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,015.48 : 745,190.49 = 322,469.64 : x
  2. Step 2: Convert to fraction form
    540,015.48/745,190.49 = 322,469.64/x
  3. Step 3: Cross multiply
    540,015.48x = 745,190.49 × 322,469.64
  4. Step 4: Simplify right side
    540,015.48x = 240,301,303,703.42
  5. Step 5: Solve for x
    x = 240,301,303,703.42/540,015.48
  6. Step 6: Final answer
    x = 444,989.66

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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.