Home / 1,258,454,005.12-1,887,686,978.64-385,053,980.32

Finding the Fourth Proportional to 1,258,454,005.12, 1,887,686,978.64 and 385,053,980.32

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Solution

The fourth proportional to 1,258,454,005.12, 1,887,686,978.64 and 385,053,980.32 is: 577,582,797.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,454,005.12 : 1,887,686,978.64 = 385,053,980.32 : x
  2. Step 2: Convert to fraction form
    1,258,454,005.12/1,887,686,978.64 = 385,053,980.32/x
  3. Step 3: Cross multiply
    1,258,454,005.12x = 1,887,686,978.64 × 385,053,980.32
  4. Step 4: Simplify right side
    1,258,454,005.12x = 726,861,384,723,566,848
  5. Step 5: Solve for x
    x = 726,861,384,723,566,848/1,258,454,005.12
  6. Step 6: Final answer
    x = 577,582,797.44

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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.