Home / 485,441,274.93-670,091,136.03-318,188,314.50

Finding the Fourth Proportional to 485,441,274.93, 670,091,136.03 and 318,188,314.50

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Solution

The fourth proportional to 485,441,274.93, 670,091,136.03 and 318,188,314.50 is: 439,219,283.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,441,274.93 : 670,091,136.03 = 318,188,314.50 : x
  2. Step 2: Convert to fraction form
    485,441,274.93/670,091,136.03 = 318,188,314.50/x
  3. Step 3: Cross multiply
    485,441,274.93x = 670,091,136.03 × 318,188,314.50
  4. Step 4: Simplify right side
    485,441,274.93x = 213,215,169,134,775,904
  5. Step 5: Solve for x
    x = 213,215,169,134,775,904/485,441,274.93
  6. Step 6: Final answer
    x = 439,219,283.87

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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.