Home / 518,443,566.93-777,666,139.43-211,735,679.81

Finding the Fourth Proportional to 518,443,566.93, 777,666,139.43 and 211,735,679.81

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Solution

The fourth proportional to 518,443,566.93, 777,666,139.43 and 211,735,679.81 is: 317,603,841.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,443,566.93 : 777,666,139.43 = 211,735,679.81 : x
  2. Step 2: Convert to fraction form
    518,443,566.93/777,666,139.43 = 211,735,679.81/x
  3. Step 3: Cross multiply
    518,443,566.93x = 777,666,139.43 × 211,735,679.81
  4. Step 4: Simplify right side
    518,443,566.93x = 164,659,668,692,482,272
  5. Step 5: Solve for x
    x = 164,659,668,692,482,272/518,443,566.93
  6. Step 6: Final answer
    x = 317,603,841.95

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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.