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Finding the Fourth Proportional to 718,590, 1,077,880.68 and 186,109.68

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Solution

The fourth proportional to 718,590, 1,077,880.68 and 186,109.68 is: 279,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,590 : 1,077,880.68 = 186,109.68 : x
  2. Step 2: Convert to fraction form
    718,590/1,077,880.68 = 186,109.68/x
  3. Step 3: Cross multiply
    718,590x = 1,077,880.68 × 186,109.68
  4. Step 4: Simplify right side
    718,590x = 200,604,028,432.98
  5. Step 5: Solve for x
    x = 200,604,028,432.98/718,590
  6. Step 6: Final answer
    x = 279,163.40

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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.