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Finding the Fourth Proportional to 7,345,129.60, 11,017,694.40 and 5,203,619.20

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Solution

The fourth proportional to 7,345,129.60, 11,017,694.40 and 5,203,619.20 is: 7,805,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345,129.60 : 11,017,694.40 = 5,203,619.20 : x
  2. Step 2: Convert to fraction form
    7,345,129.60/11,017,694.40 = 5,203,619.20/x
  3. Step 3: Cross multiply
    7,345,129.60x = 11,017,694.40 × 5,203,619.20
  4. Step 4: Simplify right side
    7,345,129.60x = 57,331,886,119,572.48
  5. Step 5: Solve for x
    x = 57,331,886,119,572.48/7,345,129.60
  6. Step 6: Final answer
    x = 7,805,428.80

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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.