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Finding the Fourth Proportional to 667,154,059.89, 920,671,008.80 and 365,738,833.05

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Solution

The fourth proportional to 667,154,059.89, 920,671,008.80 and 365,738,833.05 is: 504,718,715.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,154,059.89 : 920,671,008.80 = 365,738,833.05 : x
  2. Step 2: Convert to fraction form
    667,154,059.89/920,671,008.80 = 365,738,833.05/x
  3. Step 3: Cross multiply
    667,154,059.89x = 920,671,008.80 × 365,738,833.05
  4. Step 4: Simplify right side
    667,154,059.89x = 336,725,140,379,649,600
  5. Step 5: Solve for x
    x = 336,725,140,379,649,600/667,154,059.89
  6. Step 6: Final answer
    x = 504,718,715.85

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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.