Home / 1,287,203.74-1,930,742.86-477,745.72

Finding the Fourth Proportional to 1,287,203.74, 1,930,742.86 and 477,745.72

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Solution

The fourth proportional to 1,287,203.74, 1,930,742.86 and 477,745.72 is: 716,595.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,203.74 : 1,930,742.86 = 477,745.72 : x
  2. Step 2: Convert to fraction form
    1,287,203.74/1,930,742.86 = 477,745.72/x
  3. Step 3: Cross multiply
    1,287,203.74x = 1,930,742.86 × 477,745.72
  4. Step 4: Simplify right side
    1,287,203.74x = 922,404,137,785.56
  5. Step 5: Solve for x
    x = 922,404,137,785.56/1,287,203.74
  6. Step 6: Final answer
    x = 716,595.29

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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.