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Finding the Fourth Proportional to 7,907,809.80, 11,861,714.70 and 7,340,939.40

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Solution

The fourth proportional to 7,907,809.80, 11,861,714.70 and 7,340,939.40 is: 11,011,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907,809.80 : 11,861,714.70 = 7,340,939.40 : x
  2. Step 2: Convert to fraction form
    7,907,809.80/11,861,714.70 = 7,340,939.40/x
  3. Step 3: Cross multiply
    7,907,809.80x = 11,861,714.70 × 7,340,939.40
  4. Step 4: Simplify right side
    7,907,809.80x = 87,076,128,792,789.17
  5. Step 5: Solve for x
    x = 87,076,128,792,789.17/7,907,809.80
  6. Step 6: Final answer
    x = 11,011,409.10

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1.5x scale

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.