Home / 839,873,280.60-1,259,809,920.90-666,410,938.20

Finding the Fourth Proportional to 839,873,280.60, 1,259,809,920.90 and 666,410,938.20

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Solution

The fourth proportional to 839,873,280.60, 1,259,809,920.90 and 666,410,938.20 is: 999,616,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,873,280.60 : 1,259,809,920.90 = 666,410,938.20 : x
  2. Step 2: Convert to fraction form
    839,873,280.60/1,259,809,920.90 = 666,410,938.20/x
  3. Step 3: Cross multiply
    839,873,280.60x = 1,259,809,920.90 × 666,410,938.20
  4. Step 4: Simplify right side
    839,873,280.60x = 839,551,111,340,636,928
  5. Step 5: Solve for x
    x = 839,551,111,340,636,928/839,873,280.60
  6. Step 6: Final answer
    x = 999,616,407.30

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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.