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Finding the Fourth Proportional to 1,140,869.10, 1,573,905.03 and 687,908.46

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Solution

The fourth proportional to 1,140,869.10, 1,573,905.03 and 687,908.46 is: 949,015.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,869.10 : 1,573,905.03 = 687,908.46 : x
  2. Step 2: Convert to fraction form
    1,140,869.10/1,573,905.03 = 687,908.46/x
  3. Step 3: Cross multiply
    1,140,869.10x = 1,573,905.03 × 687,908.46
  4. Step 4: Simplify right side
    1,140,869.10x = 1,082,702,585,373.55
  5. Step 5: Solve for x
    x = 1,082,702,585,373.55/1,140,869.10
  6. Step 6: Final answer
    x = 949,015.61

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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.