Home / 659,315,230.80-989,114,563.80-199,299,901.20

Finding the Fourth Proportional to 659,315,230.80, 989,114,563.80 and 199,299,901.20

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Solution

The fourth proportional to 659,315,230.80, 989,114,563.80 and 199,299,901.20 is: 298,992,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315,230.80 : 989,114,563.80 = 199,299,901.20 : x
  2. Step 2: Convert to fraction form
    659,315,230.80/989,114,563.80 = 199,299,901.20/x
  3. Step 3: Cross multiply
    659,315,230.80x = 989,114,563.80 × 199,299,901.20
  4. Step 4: Simplify right side
    659,315,230.80x = 197,130,434,840,821,088
  5. Step 5: Solve for x
    x = 197,130,434,840,821,088/659,315,230.80
  6. Step 6: Final answer
    x = 298,992,690.65

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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.