Home / 699,408,005.87-965,267,686.40-398,066,588.30

Finding the Fourth Proportional to 699,408,005.87, 965,267,686.40 and 398,066,588.30

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Solution

The fourth proportional to 699,408,005.87, 965,267,686.40 and 398,066,588.30 is: 549,380,063.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,408,005.87 : 965,267,686.40 = 398,066,588.30 : x
  2. Step 2: Convert to fraction form
    699,408,005.87/965,267,686.40 = 398,066,588.30/x
  3. Step 3: Cross multiply
    699,408,005.87x = 965,267,686.40 × 398,066,588.30
  4. Step 4: Simplify right side
    699,408,005.87x = 384,240,814,714,665,664
  5. Step 5: Solve for x
    x = 384,240,814,714,665,664/699,408,005.87
  6. Step 6: Final answer
    x = 549,380,063.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.