Home / 909,609,314.94-1,255,264,613.87-491,921,591.58

Finding the Fourth Proportional to 909,609,314.94, 1,255,264,613.87 and 491,921,591.58

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Solution

The fourth proportional to 909,609,314.94, 1,255,264,613.87 and 491,921,591.58 is: 678,853,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,609,314.94 : 1,255,264,613.87 = 491,921,591.58 : x
  2. Step 2: Convert to fraction form
    909,609,314.94/1,255,264,613.87 = 491,921,591.58/x
  3. Step 3: Cross multiply
    909,609,314.94x = 1,255,264,613.87 × 491,921,591.58
  4. Step 4: Simplify right side
    909,609,314.94x = 617,491,766,706,524,928
  5. Step 5: Solve for x
    x = 617,491,766,706,524,928/909,609,314.94
  6. Step 6: Final answer
    x = 678,853,829.40

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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.