Home / 1,259,714,671.80-1,889,572,007.70-769,938,646.20

Finding the Fourth Proportional to 1,259,714,671.80, 1,889,572,007.70 and 769,938,646.20

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Solution

The fourth proportional to 1,259,714,671.80, 1,889,572,007.70 and 769,938,646.20 is: 1,154,907,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,714,671.80 : 1,889,572,007.70 = 769,938,646.20 : x
  2. Step 2: Convert to fraction form
    1,259,714,671.80/1,889,572,007.70 = 769,938,646.20/x
  3. Step 3: Cross multiply
    1,259,714,671.80x = 1,889,572,007.70 × 769,938,646.20
  4. Step 4: Simplify right side
    1,259,714,671.80x = 1,454,854,513,505,954,048
  5. Step 5: Solve for x
    x = 1,454,854,513,505,954,048/1,259,714,671.80
  6. Step 6: Final answer
    x = 1,154,907,969.30

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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.