Home / 1,253,361,511.74-1,728,918,500.46-782,645,706.30

Finding the Fourth Proportional to 1,253,361,511.74, 1,728,918,500.46 and 782,645,706.30

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Solution

The fourth proportional to 1,253,361,511.74, 1,728,918,500.46 and 782,645,706.30 is: 1,079,601,238.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,361,511.74 : 1,728,918,500.46 = 782,645,706.30 : x
  2. Step 2: Convert to fraction form
    1,253,361,511.74/1,728,918,500.46 = 782,645,706.30/x
  3. Step 3: Cross multiply
    1,253,361,511.74x = 1,728,918,500.46 × 782,645,706.30
  4. Step 4: Simplify right side
    1,253,361,511.74x = 1,353,130,640,927,653,632
  5. Step 5: Solve for x
    x = 1,353,130,640,927,653,632/1,253,361,511.74
  6. Step 6: Final answer
    x = 1,079,601,238.95

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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.