Home / 806,651,185.10-1,209,976,777.65-645,408,049.10

Finding the Fourth Proportional to 806,651,185.10, 1,209,976,777.65 and 645,408,049.10

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Solution

The fourth proportional to 806,651,185.10, 1,209,976,777.65 and 645,408,049.10 is: 968,112,073.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,651,185.10 : 1,209,976,777.65 = 645,408,049.10 : x
  2. Step 2: Convert to fraction form
    806,651,185.10/1,209,976,777.65 = 645,408,049.10/x
  3. Step 3: Cross multiply
    806,651,185.10x = 1,209,976,777.65 × 645,408,049.10
  4. Step 4: Simplify right side
    806,651,185.10x = 780,928,751,519,391,104
  5. Step 5: Solve for x
    x = 780,928,751,519,391,104/806,651,185.10
  6. Step 6: Final answer
    x = 968,112,073.65

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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.