Home / 699,407,920.36-965,267,565.85-398,066,498.75

Finding the Fourth Proportional to 699,407,920.36, 965,267,565.85 and 398,066,498.75

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Solution

The fourth proportional to 699,407,920.36, 965,267,565.85 and 398,066,498.75 is: 549,379,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,407,920.36 : 965,267,565.85 = 398,066,498.75 : x
  2. Step 2: Convert to fraction form
    699,407,920.36/965,267,565.85 = 398,066,498.75/x
  3. Step 3: Cross multiply
    699,407,920.36x = 965,267,565.85 × 398,066,498.75
  4. Step 4: Simplify right side
    699,407,920.36x = 384,240,680,288,027,904
  5. Step 5: Solve for x
    x = 384,240,680,288,027,904/699,407,920.36
  6. Step 6: Final answer
    x = 549,379,938.52

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1.5x scale

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.