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Finding the Fourth Proportional to 8,870,649.60, 13,305,974.40 and 3,191,059.20

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Solution

The fourth proportional to 8,870,649.60, 13,305,974.40 and 3,191,059.20 is: 4,786,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870,649.60 : 13,305,974.40 = 3,191,059.20 : x
  2. Step 2: Convert to fraction form
    8,870,649.60/13,305,974.40 = 3,191,059.20/x
  3. Step 3: Cross multiply
    8,870,649.60x = 13,305,974.40 × 3,191,059.20
  4. Step 4: Simplify right side
    8,870,649.60x = 42,460,152,024,084.48
  5. Step 5: Solve for x
    x = 42,460,152,024,084.48/8,870,649.60
  6. Step 6: Final answer
    x = 4,786,588.80

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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.