Home / 909,609,315.94-1,255,264,615.25-491,921,592.58

Finding the Fourth Proportional to 909,609,315.94, 1,255,264,615.25 and 491,921,592.58

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Solution

The fourth proportional to 909,609,315.94, 1,255,264,615.25 and 491,921,592.58 is: 678,853,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,609,315.94 : 1,255,264,615.25 = 491,921,592.58 : x
  2. Step 2: Convert to fraction form
    909,609,315.94/1,255,264,615.25 = 491,921,592.58/x
  3. Step 3: Cross multiply
    909,609,315.94x = 1,255,264,615.25 × 491,921,592.58
  4. Step 4: Simplify right side
    909,609,315.94x = 617,491,768,643,100,928
  5. Step 5: Solve for x
    x = 617,491,768,643,100,928/909,609,315.94
  6. Step 6: Final answer
    x = 678,853,830.78

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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.