Home / 1,171,448,526.69-1,616,594,532.12-642,821,359.14

Finding the Fourth Proportional to 1,171,448,526.69, 1,616,594,532.12 and 642,821,359.14

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Solution

The fourth proportional to 1,171,448,526.69, 1,616,594,532.12 and 642,821,359.14 is: 887,091,042.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,448,526.69 : 1,616,594,532.12 = 642,821,359.14 : x
  2. Step 2: Convert to fraction form
    1,171,448,526.69/1,616,594,532.12 = 642,821,359.14/x
  3. Step 3: Cross multiply
    1,171,448,526.69x = 1,616,594,532.12 × 642,821,359.14
  4. Step 4: Simplify right side
    1,171,448,526.69x = 1,039,181,494,315,670,656
  5. Step 5: Solve for x
    x = 1,039,181,494,315,670,656/1,171,448,526.69
  6. Step 6: Final answer
    x = 887,091,042.11

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Double scale
Find fourth proportional to 1,171,448,527.69, 1,616,594,533.50 and 642,821,360.14
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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.