Home / 8,640,145.80-12,960,218.70-5,784,798.60

Finding the Fourth Proportional to 8,640,145.80, 12,960,218.70 and 5,784,798.60

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Solution

The fourth proportional to 8,640,145.80, 12,960,218.70 and 5,784,798.60 is: 8,677,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640,145.80 : 12,960,218.70 = 5,784,798.60 : x
  2. Step 2: Convert to fraction form
    8,640,145.80/12,960,218.70 = 5,784,798.60/x
  3. Step 3: Cross multiply
    8,640,145.80x = 12,960,218.70 × 5,784,798.60
  4. Step 4: Simplify right side
    8,640,145.80x = 74,972,254,991,453.81
  5. Step 5: Solve for x
    x = 74,972,254,991,453.81/8,640,145.80
  6. Step 6: Final answer
    x = 8,677,197.90

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Double scale
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Similar ratio
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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.