Home / 1,400,639.69-2,101,615.64-690,280.22

Finding the Fourth Proportional to 1,400,639.69, 2,101,615.64 and 690,280.22

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Solution

The fourth proportional to 1,400,639.69, 2,101,615.64 and 690,280.22 is: 1,035,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,639.69 : 2,101,615.64 = 690,280.22 : x
  2. Step 2: Convert to fraction form
    1,400,639.69/2,101,615.64 = 690,280.22/x
  3. Step 3: Cross multiply
    1,400,639.69x = 2,101,615.64 × 690,280.22
  4. Step 4: Simplify right side
    1,400,639.69x = 1,450,703,692,375.16
  5. Step 5: Solve for x
    x = 1,450,703,692,375.16/1,400,639.69
  6. Step 6: Final answer
    x = 1,035,743.67

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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.