Home / 1,211,687,124.09-1,817,394,421.33-326,437,909.76

Finding the Fourth Proportional to 1,211,687,124.09, 1,817,394,421.33 and 326,437,909.76

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Solution

The fourth proportional to 1,211,687,124.09, 1,817,394,421.33 and 326,437,909.76 is: 489,620,153.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,687,124.09 : 1,817,394,421.33 = 326,437,909.76 : x
  2. Step 2: Convert to fraction form
    1,211,687,124.09/1,817,394,421.33 = 326,437,909.76/x
  3. Step 3: Cross multiply
    1,211,687,124.09x = 1,817,394,421.33 × 326,437,909.76
  4. Step 4: Simplify right side
    1,211,687,124.09x = 593,266,436,108,449,920
  5. Step 5: Solve for x
    x = 593,266,436,108,449,920/1,211,687,124.09
  6. Step 6: Final answer
    x = 489,620,153.84

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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.