Home / 801,217,641.90-1,105,686,837.84-443,991,385.60

Finding the Fourth Proportional to 801,217,641.90, 1,105,686,837.84 and 443,991,385.60

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Solution

The fourth proportional to 801,217,641.90, 1,105,686,837.84 and 443,991,385.60 is: 612,711,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,217,641.90 : 1,105,686,837.84 = 443,991,385.60 : x
  2. Step 2: Convert to fraction form
    801,217,641.90/1,105,686,837.84 = 443,991,385.60/x
  3. Step 3: Cross multiply
    801,217,641.90x = 1,105,686,837.84 × 443,991,385.60
  4. Step 4: Simplify right side
    801,217,641.90x = 490,915,431,172,264,128
  5. Step 5: Solve for x
    x = 490,915,431,172,264,128/801,217,641.90
  6. Step 6: Final answer
    x = 612,711,709.65

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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.