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Finding the Fourth Proportional to 873,809.64, 1,311,223.95 and 368,339.67

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Solution

The fourth proportional to 873,809.64, 1,311,223.95 and 368,339.67 is: 552,724.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,809.64 : 1,311,223.95 = 368,339.67 : x
  2. Step 2: Convert to fraction form
    873,809.64/1,311,223.95 = 368,339.67/x
  3. Step 3: Cross multiply
    873,809.64x = 1,311,223.95 × 368,339.67
  4. Step 4: Simplify right side
    873,809.64x = 482,975,797,039.10
  5. Step 5: Solve for x
    x = 482,975,797,039.10/873,809.64
  6. Step 6: Final answer
    x = 552,724.27

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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.