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Finding the Fourth Proportional to 9,143,428.90, 12,784,004.30 and 9,143,428.90

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Solution

The fourth proportional to 9,143,428.90, 12,784,004.30 and 9,143,428.90 is: 12,784,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143,428.90 : 12,784,004.30 = 9,143,428.90 : x
  2. Step 2: Convert to fraction form
    9,143,428.90/12,784,004.30 = 9,143,428.90/x
  3. Step 3: Cross multiply
    9,143,428.90x = 12,784,004.30 × 9,143,428.90
  4. Step 4: Simplify right side
    9,143,428.90x = 116,889,634,374,344.28
  5. Step 5: Solve for x
    x = 116,889,634,374,344.28/9,143,428.90
  6. Step 6: Final answer
    x = 12,784,004.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.