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Finding the Fourth Proportional to 1,243,566.30, 1,865,349.45 and 994,734.30

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Solution

The fourth proportional to 1,243,566.30, 1,865,349.45 and 994,734.30 is: 1,492,101.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,566.30 : 1,865,349.45 = 994,734.30 : x
  2. Step 2: Convert to fraction form
    1,243,566.30/1,865,349.45 = 994,734.30/x
  3. Step 3: Cross multiply
    1,243,566.30x = 1,865,349.45 × 994,734.30
  4. Step 4: Simplify right side
    1,243,566.30x = 1,855,527,079,401.14
  5. Step 5: Solve for x
    x = 1,855,527,079,401.14/1,243,566.30
  6. Step 6: Final answer
    x = 1,492,101.45

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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.