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Finding the Fourth Proportional to 540,423.28, 810,633.30 and 379,838.08

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Solution

The fourth proportional to 540,423.28, 810,633.30 and 379,838.08 is: 569,755.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,423.28 : 810,633.30 = 379,838.08 : x
  2. Step 2: Convert to fraction form
    540,423.28/810,633.30 = 379,838.08/x
  3. Step 3: Cross multiply
    540,423.28x = 810,633.30 × 379,838.08
  4. Step 4: Simplify right side
    540,423.28x = 307,909,396,256.06
  5. Step 5: Solve for x
    x = 307,909,396,256.06/540,423.28
  6. Step 6: Final answer
    x = 569,755.98

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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.