Home / 863,213,949.72-1,191,186,340.52-486,848,042.44

Finding the Fourth Proportional to 863,213,949.72, 1,191,186,340.52 and 486,848,042.44

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Solution

The fourth proportional to 863,213,949.72, 1,191,186,340.52 and 486,848,042.44 is: 671,822,713.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,213,949.72 : 1,191,186,340.52 = 486,848,042.44 : x
  2. Step 2: Convert to fraction form
    863,213,949.72/1,191,186,340.52 = 486,848,042.44/x
  3. Step 3: Cross multiply
    863,213,949.72x = 1,191,186,340.52 × 486,848,042.44
  4. Step 4: Simplify right side
    863,213,949.72x = 579,926,738,063,429,248
  5. Step 5: Solve for x
    x = 579,926,738,063,429,248/863,213,949.72
  6. Step 6: Final answer
    x = 671,822,713.54

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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.