Home / 1,259,809,912.40-1,889,714,868.60-999,616,398.80

Finding the Fourth Proportional to 1,259,809,912.40, 1,889,714,868.60 and 999,616,398.80

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Solution

The fourth proportional to 1,259,809,912.40, 1,889,714,868.60 and 999,616,398.80 is: 1,499,424,598.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,809,912.40 : 1,889,714,868.60 = 999,616,398.80 : x
  2. Step 2: Convert to fraction form
    1,259,809,912.40/1,889,714,868.60 = 999,616,398.80/x
  3. Step 3: Cross multiply
    1,259,809,912.40x = 1,889,714,868.60 × 999,616,398.80
  4. Step 4: Simplify right side
    1,259,809,912.40x = 1,888,989,971,708,747,008
  5. Step 5: Solve for x
    x = 1,888,989,971,708,747,008/1,259,809,912.40
  6. Step 6: Final answer
    x = 1,499,424,598.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.