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Finding the Fourth Proportional to 652,641,794.50, 978,989,690.13 and 192,579,969.28

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Solution

The fourth proportional to 652,641,794.50, 978,989,690.13 and 192,579,969.28 is: 288,877,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,641,794.50 : 978,989,690.13 = 192,579,969.28 : x
  2. Step 2: Convert to fraction form
    652,641,794.50/978,989,690.13 = 192,579,969.28/x
  3. Step 3: Cross multiply
    652,641,794.50x = 978,989,690.13 × 192,579,969.28
  4. Step 4: Simplify right side
    652,641,794.50x = 188,533,804,450,672,128
  5. Step 5: Solve for x
    x = 188,533,804,450,672,128/652,641,794.50
  6. Step 6: Final answer
    x = 288,877,920.54

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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.