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Finding the Fourth Proportional to 400,990.78, 601,579.08 and 116,688.04

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Solution

The fourth proportional to 400,990.78, 601,579.08 and 116,688.04 is: 175,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,990.78 : 601,579.08 = 116,688.04 : x
  2. Step 2: Convert to fraction form
    400,990.78/601,579.08 = 116,688.04/x
  3. Step 3: Cross multiply
    400,990.78x = 601,579.08 × 116,688.04
  4. Step 4: Simplify right side
    400,990.78x = 70,197,083,750.20
  5. Step 5: Solve for x
    x = 70,197,083,750.20/400,990.78
  6. Step 6: Final answer
    x = 175,059.10

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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.