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Finding the Fourth Proportional to 1,330,235.46, 1,835,724.87 and 718,388.16

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Solution

The fourth proportional to 1,330,235.46, 1,835,724.87 and 718,388.16 is: 991,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,235.46 : 1,835,724.87 = 718,388.16 : x
  2. Step 2: Convert to fraction form
    1,330,235.46/1,835,724.87 = 718,388.16/x
  3. Step 3: Cross multiply
    1,330,235.46x = 1,835,724.87 × 718,388.16
  4. Step 4: Simplify right side
    1,330,235.46x = 1,318,763,018,210.03
  5. Step 5: Solve for x
    x = 1,318,763,018,210.03/1,330,235.46
  6. Step 6: Final answer
    x = 991,375.63

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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.