Home / 939,290,591.22-1,296,236,627.67-515,943,397.86

Finding the Fourth Proportional to 939,290,591.22, 1,296,236,627.67 and 515,943,397.86

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Solution

The fourth proportional to 939,290,591.22, 1,296,236,627.67 and 515,943,397.86 is: 712,010,464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,290,591.22 : 1,296,236,627.67 = 515,943,397.86 : x
  2. Step 2: Convert to fraction form
    939,290,591.22/1,296,236,627.67 = 515,943,397.86/x
  3. Step 3: Cross multiply
    939,290,591.22x = 1,296,236,627.67 × 515,943,397.86
  4. Step 4: Simplify right side
    939,290,591.22x = 668,784,730,110,647,552
  5. Step 5: Solve for x
    x = 668,784,730,110,647,552/939,290,591.22
  6. Step 6: Final answer
    x = 712,010,464.45

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1.5x scale

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.