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Finding the Fourth Proportional to 702,725,546.70, 969,761,346.30 and 389,479,983.93

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Solution

The fourth proportional to 702,725,546.70, 969,761,346.30 and 389,479,983.93 is: 537,482,428.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,725,546.70 : 969,761,346.30 = 389,479,983.93 : x
  2. Step 2: Convert to fraction form
    702,725,546.70/969,761,346.30 = 389,479,983.93/x
  3. Step 3: Cross multiply
    702,725,546.70x = 969,761,346.30 × 389,479,983.93
  4. Step 4: Simplify right side
    702,725,546.70x = 377,702,633,572,859,136
  5. Step 5: Solve for x
    x = 377,702,633,572,859,136/702,725,546.70
  6. Step 6: Final answer
    x = 537,482,428.73

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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.