Home / 1,132,658,415.16-1,563,147,171.78-686,640,578.12

Finding the Fourth Proportional to 1,132,658,415.16, 1,563,147,171.78 and 686,640,578.12

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Solution

The fourth proportional to 1,132,658,415.16, 1,563,147,171.78 and 686,640,578.12 is: 947,611,621.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132,658,415.16 : 1,563,147,171.78 = 686,640,578.12 : x
  2. Step 2: Convert to fraction form
    1,132,658,415.16/1,563,147,171.78 = 686,640,578.12/x
  3. Step 3: Cross multiply
    1,132,658,415.16x = 1,563,147,171.78 × 686,640,578.12
  4. Step 4: Simplify right side
    1,132,658,415.16x = 1,073,320,277,717,662,080
  5. Step 5: Solve for x
    x = 1,073,320,277,717,662,080/1,132,658,415.16
  6. Step 6: Final answer
    x = 947,611,621.78

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Double scale
Find fourth proportional to 1,132,658,416.16, 1,563,147,173.16 and 686,640,579.12
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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.