Home / 21,124,470,643.20-31,686,705,964.80-6,400,578,873.60

Finding the Fourth Proportional to 21,124,470,643.20, 31,686,705,964.80 and 6,400,578,873.60

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Solution

The fourth proportional to 21,124,470,643.20, 31,686,705,964.80 and 6,400,578,873.60 is: 9,600,868,310.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124,470,643.20 : 31,686,705,964.80 = 6,400,578,873.60 : x
  2. Step 2: Convert to fraction form
    21,124,470,643.20/31,686,705,964.80 = 6,400,578,873.60/x
  3. Step 3: Cross multiply
    21,124,470,643.20x = 31,686,705,964.80 × 6,400,578,873.60
  4. Step 4: Simplify right side
    21,124,470,643.20x = 202,813,260,772,273,979,392
  5. Step 5: Solve for x
    x = 202,813,260,772,273,979,392/21,124,470,643.20
  6. Step 6: Final answer
    x = 9,600,868,310.40

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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.