Home / 1,171,448,894.10-1,616,595,037.68-642,821,724.78

Finding the Fourth Proportional to 1,171,448,894.10, 1,616,595,037.68 and 642,821,724.78

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Solution

The fourth proportional to 1,171,448,894.10, 1,616,595,037.68 and 642,821,724.78 is: 887,091,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,448,894.10 : 1,616,595,037.68 = 642,821,724.78 : x
  2. Step 2: Convert to fraction form
    1,171,448,894.10/1,616,595,037.68 = 642,821,724.78/x
  3. Step 3: Cross multiply
    1,171,448,894.10x = 1,616,595,037.68 × 642,821,724.78
  4. Step 4: Simplify right side
    1,171,448,894.10x = 1,039,182,410,392,246,656
  5. Step 5: Solve for x
    x = 1,039,182,410,392,246,656/1,171,448,894.10
  6. Step 6: Final answer
    x = 887,091,545.88

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Half scale
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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.