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Finding the Fourth Proportional to 878,571.62, 1,317,358.04 and 345,803.84

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Solution

The fourth proportional to 878,571.62, 1,317,358.04 and 345,803.84 is: 518,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,571.62 : 1,317,358.04 = 345,803.84 : x
  2. Step 2: Convert to fraction form
    878,571.62/1,317,358.04 = 345,803.84/x
  3. Step 3: Cross multiply
    878,571.62x = 1,317,358.04 × 345,803.84
  4. Step 4: Simplify right side
    878,571.62x = 455,547,468,886.87
  5. Step 5: Solve for x
    x = 455,547,468,886.87/878,571.62
  6. Step 6: Final answer
    x = 518,509.20

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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.