Home / 1,318,376.38-1,977,754.07-407,629.87

Finding the Fourth Proportional to 1,318,376.38, 1,977,754.07 and 407,629.87

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Solution

The fourth proportional to 1,318,376.38, 1,977,754.07 and 407,629.87 is: 611,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,376.38 : 1,977,754.07 = 407,629.87 : x
  2. Step 2: Convert to fraction form
    1,318,376.38/1,977,754.07 = 407,629.87/x
  3. Step 3: Cross multiply
    1,318,376.38x = 1,977,754.07 × 407,629.87
  4. Step 4: Simplify right side
    1,318,376.38x = 806,191,640,409.53
  5. Step 5: Solve for x
    x = 806,191,640,409.53/1,318,376.38
  6. Step 6: Final answer
    x = 611,503.40

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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.