Home / 699,408,005.37-965,267,685.71-398,066,587.80

Finding the Fourth Proportional to 699,408,005.37, 965,267,685.71 and 398,066,587.80

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Solution

The fourth proportional to 699,408,005.37, 965,267,685.71 and 398,066,587.80 is: 549,380,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,408,005.37 : 965,267,685.71 = 398,066,587.80 : x
  2. Step 2: Convert to fraction form
    699,408,005.37/965,267,685.71 = 398,066,587.80/x
  3. Step 3: Cross multiply
    699,408,005.37x = 965,267,685.71 × 398,066,587.80
  4. Step 4: Simplify right side
    699,408,005.37x = 384,240,813,964,182,528
  5. Step 5: Solve for x
    x = 384,240,813,964,182,528/699,408,005.37
  6. Step 6: Final answer
    x = 549,380,062.87

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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.