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Finding the Fourth Proportional to 540,530.92, 810,928.53 and 380,918.20

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Solution

The fourth proportional to 540,530.92, 810,928.53 and 380,918.20 is: 571,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,530.92 : 810,928.53 = 380,918.20 : x
  2. Step 2: Convert to fraction form
    540,530.92/810,928.53 = 380,918.20/x
  3. Step 3: Cross multiply
    540,530.92x = 810,928.53 × 380,918.20
  4. Step 4: Simplify right side
    540,530.92x = 308,897,435,976.25
  5. Step 5: Solve for x
    x = 308,897,435,976.25/540,530.92
  6. Step 6: Final answer
    x = 571,470.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.