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Finding the Fourth Proportional to 540,109.44, 744,298.56 and 388,920.96

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Solution

The fourth proportional to 540,109.44, 744,298.56 and 388,920.96 is: 535,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,109.44 : 744,298.56 = 388,920.96 : x
  2. Step 2: Convert to fraction form
    540,109.44/744,298.56 = 388,920.96/x
  3. Step 3: Cross multiply
    540,109.44x = 744,298.56 × 388,920.96
  4. Step 4: Simplify right side
    540,109.44x = 289,473,310,481.82
  5. Step 5: Solve for x
    x = 289,473,310,481.82/540,109.44
  6. Step 6: Final answer
    x = 535,953.07

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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.