Home / 855,556,840.51-1,177,924,413.20-667,143,360.50

Finding the Fourth Proportional to 855,556,840.51, 1,177,924,413.20 and 667,143,360.50

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Solution

The fourth proportional to 855,556,840.51, 1,177,924,413.20 and 667,143,360.50 is: 918,518,109.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,556,840.51 : 1,177,924,413.20 = 667,143,360.50 : x
  2. Step 2: Convert to fraction form
    855,556,840.51/1,177,924,413.20 = 667,143,360.50/x
  3. Step 3: Cross multiply
    855,556,840.51x = 1,177,924,413.20 × 667,143,360.50
  4. Step 4: Simplify right side
    855,556,840.51x = 785,844,451,441,851,392
  5. Step 5: Solve for x
    x = 785,844,451,441,851,392/855,556,840.51
  6. Step 6: Final answer
    x = 918,518,109.18

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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.