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Finding the Fourth Proportional to 8,569,130.86, 12,853,640.80 and 2,179,328.01

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Solution

The fourth proportional to 8,569,130.86, 12,853,640.80 and 2,179,328.01 is: 3,268,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,569,130.86 : 12,853,640.80 = 2,179,328.01 : x
  2. Step 2: Convert to fraction form
    8,569,130.86/12,853,640.80 = 2,179,328.01/x
  3. Step 3: Cross multiply
    8,569,130.86x = 12,853,640.80 × 2,179,328.01
  4. Step 4: Simplify right side
    8,569,130.86x = 28,012,299,425,918.81
  5. Step 5: Solve for x
    x = 28,012,299,425,918.81/8,569,130.86
  6. Step 6: Final answer
    x = 3,268,977.90

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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.