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Finding the Fourth Proportional to 1,990,672,000.40, 2,986,008,000.60 and 610,699,494.80

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Solution

The fourth proportional to 1,990,672,000.40, 2,986,008,000.60 and 610,699,494.80 is: 916,049,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,672,000.40 : 2,986,008,000.60 = 610,699,494.80 : x
  2. Step 2: Convert to fraction form
    1,990,672,000.40/2,986,008,000.60 = 610,699,494.80/x
  3. Step 3: Cross multiply
    1,990,672,000.40x = 2,986,008,000.60 × 610,699,494.80
  4. Step 4: Simplify right side
    1,990,672,000.40x = 1,823,553,577,435,177,984
  5. Step 5: Solve for x
    x = 1,823,553,577,435,177,984/1,990,672,000.40
  6. Step 6: Final answer
    x = 916,049,242.20

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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.