Home / 1,238,554,413.60-1,857,831,620.40-687,556,384.80

Finding the Fourth Proportional to 1,238,554,413.60, 1,857,831,620.40 and 687,556,384.80

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Solution

The fourth proportional to 1,238,554,413.60, 1,857,831,620.40 and 687,556,384.80 is: 1,031,334,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,554,413.60 : 1,857,831,620.40 = 687,556,384.80 : x
  2. Step 2: Convert to fraction form
    1,238,554,413.60/1,857,831,620.40 = 687,556,384.80/x
  3. Step 3: Cross multiply
    1,238,554,413.60x = 1,857,831,620.40 × 687,556,384.80
  4. Step 4: Simplify right side
    1,238,554,413.60x = 1,277,363,992,489,349,888
  5. Step 5: Solve for x
    x = 1,277,363,992,489,349,888/1,238,554,413.60
  6. Step 6: Final answer
    x = 1,031,334,577.20

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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.