Home / 2,985,799,321.12-4,120,404,836.88-1,665,699,878.56

Finding the Fourth Proportional to 2,985,799,321.12, 4,120,404,836.88 and 1,665,699,878.56

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Solution

The fourth proportional to 2,985,799,321.12, 4,120,404,836.88 and 1,665,699,878.56 is: 2,298,666,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985,799,321.12 : 4,120,404,836.88 = 1,665,699,878.56 : x
  2. Step 2: Convert to fraction form
    2,985,799,321.12/4,120,404,836.88 = 1,665,699,878.56/x
  3. Step 3: Cross multiply
    2,985,799,321.12x = 4,120,404,836.88 × 1,665,699,878.56
  4. Step 4: Simplify right side
    2,985,799,321.12x = 6,863,357,836,409,052,160
  5. Step 5: Solve for x
    x = 6,863,357,836,409,052,160/2,985,799,321.12
  6. Step 6: Final answer
    x = 2,298,666,821.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.