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Finding the Fourth Proportional to 9,838,960.94, 13,578,374.30 and 5,428,664.94

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Solution

The fourth proportional to 9,838,960.94, 13,578,374.30 and 5,428,664.94 is: 7,491,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,838,960.94 : 13,578,374.30 = 5,428,664.94 : x
  2. Step 2: Convert to fraction form
    9,838,960.94/13,578,374.30 = 5,428,664.94/x
  3. Step 3: Cross multiply
    9,838,960.94x = 13,578,374.30 × 5,428,664.94
  4. Step 4: Simplify right side
    9,838,960.94x = 73,712,444,477,463.72
  5. Step 5: Solve for x
    x = 73,712,444,477,463.72/9,838,960.94
  6. Step 6: Final answer
    x = 7,491,893.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.