Home / 1,438,988.07-2,158,921.95-863,249.40

Finding the Fourth Proportional to 1,438,988.07, 2,158,921.95 and 863,249.40

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Solution

The fourth proportional to 1,438,988.07, 2,158,921.95 and 863,249.40 is: 1,295,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,988.07 : 2,158,921.95 = 863,249.40 : x
  2. Step 2: Convert to fraction form
    1,438,988.07/2,158,921.95 = 863,249.40/x
  3. Step 3: Cross multiply
    1,438,988.07x = 2,158,921.95 × 863,249.40
  4. Step 4: Simplify right side
    1,438,988.07x = 1,863,688,077,984.33
  5. Step 5: Solve for x
    x = 1,863,688,077,984.33/1,438,988.07
  6. Step 6: Final answer
    x = 1,295,137.96

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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.