Home / 579,401,511.12-799,562,999.88-318,641,127.12

Finding the Fourth Proportional to 579,401,511.12, 799,562,999.88 and 318,641,127.12

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Solution

The fourth proportional to 579,401,511.12, 799,562,999.88 and 318,641,127.12 is: 439,718,658.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,401,511.12 : 799,562,999.88 = 318,641,127.12 : x
  2. Step 2: Convert to fraction form
    579,401,511.12/799,562,999.88 = 318,641,127.12/x
  3. Step 3: Cross multiply
    579,401,511.12x = 799,562,999.88 × 318,641,127.12
  4. Step 4: Simplify right side
    579,401,511.12x = 254,773,655,485,211,616
  5. Step 5: Solve for x
    x = 254,773,655,485,211,616/579,401,511.12
  6. Step 6: Final answer
    x = 439,718,658.99

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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.