Home / 699,407,862.96-965,267,488.71-398,066,445.24

Finding the Fourth Proportional to 699,407,862.96, 965,267,488.71 and 398,066,445.24

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Solution

The fourth proportional to 699,407,862.96, 965,267,488.71 and 398,066,445.24 is: 549,379,865.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,407,862.96 : 965,267,488.71 = 398,066,445.24 : x
  2. Step 2: Convert to fraction form
    699,407,862.96/965,267,488.71 = 398,066,445.24/x
  3. Step 3: Cross multiply
    699,407,862.96x = 965,267,488.71 × 398,066,445.24
  4. Step 4: Simplify right side
    699,407,862.96x = 384,240,597,936,531,584
  5. Step 5: Solve for x
    x = 384,240,597,936,531,584/699,407,862.96
  6. Step 6: Final answer
    x = 549,379,865.86

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Double scale
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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.