Home / 1,415,009.70-2,122,514.55-989,856.90

Finding the Fourth Proportional to 1,415,009.70, 2,122,514.55 and 989,856.90

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Solution

The fourth proportional to 1,415,009.70, 2,122,514.55 and 989,856.90 is: 1,484,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415,009.70 : 2,122,514.55 = 989,856.90 : x
  2. Step 2: Convert to fraction form
    1,415,009.70/2,122,514.55 = 989,856.90/x
  3. Step 3: Cross multiply
    1,415,009.70x = 2,122,514.55 × 989,856.90
  4. Step 4: Simplify right side
    1,415,009.70x = 2,100,985,672,667.89
  5. Step 5: Solve for x
    x = 2,100,985,672,667.89/1,415,009.70
  6. Step 6: Final answer
    x = 1,484,785.35

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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.