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Finding the Fourth Proportional to 1,439,492,715.20, 2,159,239,072.80 and 1,439,492,715.20

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Solution

The fourth proportional to 1,439,492,715.20, 2,159,239,072.80 and 1,439,492,715.20 is: 2,159,239,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,492,715.20 : 2,159,239,072.80 = 1,439,492,715.20 : x
  2. Step 2: Convert to fraction form
    1,439,492,715.20/2,159,239,072.80 = 1,439,492,715.20/x
  3. Step 3: Cross multiply
    1,439,492,715.20x = 2,159,239,072.80 × 1,439,492,715.20
  4. Step 4: Simplify right side
    1,439,492,715.20x = 3,108,208,915,670,802,944
  5. Step 5: Solve for x
    x = 3,108,208,915,670,802,944/1,439,492,715.20
  6. Step 6: Final answer
    x = 2,159,239,072.80

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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.