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Finding the Fourth Proportional to 540,378.90, 745,813.60 and 365,869.94

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Solution

The fourth proportional to 540,378.90, 745,813.60 and 365,869.94 is: 504,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,378.90 : 745,813.60 = 365,869.94 : x
  2. Step 2: Convert to fraction form
    540,378.90/745,813.60 = 365,869.94/x
  3. Step 3: Cross multiply
    540,378.90x = 745,813.60 × 365,869.94
  4. Step 4: Simplify right side
    540,378.90x = 272,870,777,083.18
  5. Step 5: Solve for x
    x = 272,870,777,083.18/540,378.90
  6. Step 6: Final answer
    x = 504,961.94

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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.