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Finding the Fourth Proportional to 653,696.12, 902,139.18 and 492,266.36

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Solution

The fourth proportional to 653,696.12, 902,139.18 and 492,266.36 is: 679,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,696.12 : 902,139.18 = 492,266.36 : x
  2. Step 2: Convert to fraction form
    653,696.12/902,139.18 = 492,266.36/x
  3. Step 3: Cross multiply
    653,696.12x = 902,139.18 × 492,266.36
  4. Step 4: Simplify right side
    653,696.12x = 444,092,770,351.99
  5. Step 5: Solve for x
    x = 444,092,770,351.99/653,696.12
  6. Step 6: Final answer
    x = 679,356.60

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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.