Home / 1,400,639.19-2,101,614.88-690,279.72

Finding the Fourth Proportional to 1,400,639.19, 2,101,614.88 and 690,279.72

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Solution

The fourth proportional to 1,400,639.19, 2,101,614.88 and 690,279.72 is: 1,035,742.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,639.19 : 2,101,614.88 = 690,279.72 : x
  2. Step 2: Convert to fraction form
    1,400,639.19/2,101,614.88 = 690,279.72/x
  3. Step 3: Cross multiply
    1,400,639.19x = 2,101,614.88 × 690,279.72
  4. Step 4: Simplify right side
    1,400,639.19x = 1,450,702,130,914.23
  5. Step 5: Solve for x
    x = 1,450,702,130,914.23/1,400,639.19
  6. Step 6: Final answer
    x = 1,035,742.92

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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.