Home / 285,311,457,781.89-393,730,065,056.86-156,855,091,944.97

Finding the Fourth Proportional to 285,311,457,781.89, 393,730,065,056.86 and 156,855,091,944.97

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Solution

The fourth proportional to 285,311,457,781.89, 393,730,065,056.86 and 156,855,091,944.97 is: 216,460,166,150.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,311,457,781.89 : 393,730,065,056.86 = 156,855,091,944.97 : x
  2. Step 2: Convert to fraction form
    285,311,457,781.89/393,730,065,056.86 = 156,855,091,944.97/x
  3. Step 3: Cross multiply
    285,311,457,781.89x = 393,730,065,056.86 × 156,855,091,944.97
  4. Step 4: Simplify right side
    285,311,457,781.89x = 61,758,565,555,992,797,380,608
  5. Step 5: Solve for x
    x = 61,758,565,555,992,797,380,608/285,311,457,781.89
  6. Step 6: Final answer
    x = 216,460,166,150.09

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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.