Home / 289,565,013,661.12-399,599,784,078.12-159,353,868,249.73

Finding the Fourth Proportional to 289,565,013,661.12, 399,599,784,078.12 and 159,353,868,249.73

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Solution

The fourth proportional to 289,565,013,661.12, 399,599,784,078.12 and 159,353,868,249.73 is: 219,908,374,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,565,013,661.12 : 399,599,784,078.12 = 159,353,868,249.73 : x
  2. Step 2: Convert to fraction form
    289,565,013,661.12/399,599,784,078.12 = 159,353,868,249.73/x
  3. Step 3: Cross multiply
    289,565,013,661.12x = 399,599,784,078.12 × 159,353,868,249.73
  4. Step 4: Simplify right side
    289,565,013,661.12x = 63,677,771,344,605,297,508,352
  5. Step 5: Solve for x
    x = 63,677,771,344,605,297,508,352/289,565,013,661.12
  6. Step 6: Final answer
    x = 219,908,374,079.78

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Double scale
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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.