Home / 485,536,074.90-670,101,150.88-318,412,937.90

Finding the Fourth Proportional to 485,536,074.90, 670,101,150.88 and 318,412,937.90

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Solution

The fourth proportional to 485,536,074.90, 670,101,150.88 and 318,412,937.90 is: 439,450,098.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,536,074.90 : 670,101,150.88 = 318,412,937.90 : x
  2. Step 2: Convert to fraction form
    485,536,074.90/670,101,150.88 = 318,412,937.90/x
  3. Step 3: Cross multiply
    485,536,074.90x = 670,101,150.88 × 318,412,937.90
  4. Step 4: Simplify right side
    485,536,074.90x = 213,368,876,141,871,968
  5. Step 5: Solve for x
    x = 213,368,876,141,871,968/485,536,074.90
  6. Step 6: Final answer
    x = 439,450,098.92

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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.