Home / 1,558,989,555.12-2,151,132,118.92-889,628,986.80

Finding the Fourth Proportional to 1,558,989,555.12, 2,151,132,118.92 and 889,628,986.80

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Solution

The fourth proportional to 1,558,989,555.12, 2,151,132,118.92 and 889,628,986.80 is: 1,227,531,949.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558,989,555.12 : 2,151,132,118.92 = 889,628,986.80 : x
  2. Step 2: Convert to fraction form
    1,558,989,555.12/2,151,132,118.92 = 889,628,986.80/x
  3. Step 3: Cross multiply
    1,558,989,555.12x = 2,151,132,118.92 × 889,628,986.80
  4. Step 4: Simplify right side
    1,558,989,555.12x = 1,913,709,487,427,736,576
  5. Step 5: Solve for x
    x = 1,913,709,487,427,736,576/1,558,989,555.12
  6. Step 6: Final answer
    x = 1,227,531,949.23

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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.