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Finding the Fourth Proportional to 540,396.47, 745,747.85 and 310,949.19

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Solution

The fourth proportional to 540,396.47, 745,747.85 and 310,949.19 is: 429,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,396.47 : 745,747.85 = 310,949.19 : x
  2. Step 2: Convert to fraction form
    540,396.47/745,747.85 = 310,949.19/x
  3. Step 3: Cross multiply
    540,396.47x = 745,747.85 × 310,949.19
  4. Step 4: Simplify right side
    540,396.47x = 231,889,690,679.12
  5. Step 5: Solve for x
    x = 231,889,690,679.12/540,396.47
  6. Step 6: Final answer
    x = 429,110.30

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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.