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Finding the Fourth Proportional to 2,913,845.20, 4,370,897.40 and 994,728.40

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Solution

The fourth proportional to 2,913,845.20, 4,370,897.40 and 994,728.40 is: 1,492,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913,845.20 : 4,370,897.40 = 994,728.40 : x
  2. Step 2: Convert to fraction form
    2,913,845.20/4,370,897.40 = 994,728.40/x
  3. Step 3: Cross multiply
    2,913,845.20x = 4,370,897.40 × 994,728.40
  4. Step 4: Simplify right side
    2,913,845.20x = 4,347,855,777,266.16
  5. Step 5: Solve for x
    x = 4,347,855,777,266.16/2,913,845.20
  6. Step 6: Final answer
    x = 1,492,136.84

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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.