Home / 356,285,688,431.32-491,676,193,780.86-209,804,540,691.16

Finding the Fourth Proportional to 356,285,688,431.32, 491,676,193,780.86 and 209,804,540,691.16

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Solution

The fourth proportional to 356,285,688,431.32, 491,676,193,780.86 and 209,804,540,691.16 is: 289,531,410,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,285,688,431.32 : 491,676,193,780.86 = 209,804,540,691.16 : x
  2. Step 2: Convert to fraction form
    356,285,688,431.32/491,676,193,780.86 = 209,804,540,691.16/x
  3. Step 3: Cross multiply
    356,285,688,431.32x = 491,676,193,780.86 × 209,804,540,691.16
  4. Step 4: Simplify right side
    356,285,688,431.32x = 103,155,898,004,971,102,142,464
  5. Step 5: Solve for x
    x = 103,155,898,004,971,102,142,464/356,285,688,431.32
  6. Step 6: Final answer
    x = 289,531,410,759.59

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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.