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Finding the Fourth Proportional to 702,725,524.58, 969,761,315.84 and 389,479,961.81

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Solution

The fourth proportional to 702,725,524.58, 969,761,315.84 and 389,479,961.81 is: 537,482,398.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,725,524.58 : 969,761,315.84 = 389,479,961.81 : x
  2. Step 2: Convert to fraction form
    702,725,524.58/969,761,315.84 = 389,479,961.81/x
  3. Step 3: Cross multiply
    702,725,524.58x = 969,761,315.84 × 389,479,961.81
  4. Step 4: Simplify right side
    702,725,524.58x = 377,702,600,258,178,560
  5. Step 5: Solve for x
    x = 377,702,600,258,178,560/702,725,524.58
  6. Step 6: Final answer
    x = 537,482,398.24

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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.