Home / 2,878,140,896.56-3,971,761,263.78-1,607,991,420.82

Finding the Fourth Proportional to 2,878,140,896.56, 3,971,761,263.78 and 1,607,991,420.82

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Solution

The fourth proportional to 2,878,140,896.56, 3,971,761,263.78 and 1,607,991,420.82 is: 2,218,987,279.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878,140,896.56 : 3,971,761,263.78 = 1,607,991,420.82 : x
  2. Step 2: Convert to fraction form
    2,878,140,896.56/3,971,761,263.78 = 1,607,991,420.82/x
  3. Step 3: Cross multiply
    2,878,140,896.56x = 3,971,761,263.78 × 1,607,991,420.82
  4. Step 4: Simplify right side
    2,878,140,896.56x = 6,386,558,037,703,441,408
  5. Step 5: Solve for x
    x = 6,386,558,037,703,441,408/2,878,140,896.56
  6. Step 6: Final answer
    x = 2,218,987,279.37

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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.