Home / 1,222,138,976,863.90-1,686,640,927,308.90-708,437,392,413.38

Finding the Fourth Proportional to 1,222,138,976,863.90, 1,686,640,927,308.90 and 708,437,392,413.38

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Solution

The fourth proportional to 1,222,138,976,863.90, 1,686,640,927,308.90 and 708,437,392,413.38 is: 977,695,272,878.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,138,976,863.90 : 1,686,640,927,308.90 = 708,437,392,413.38 : x
  2. Step 2: Convert to fraction form
    1,222,138,976,863.90/1,686,640,927,308.90 = 708,437,392,413.38/x
  3. Step 3: Cross multiply
    1,222,138,976,863.90x = 1,686,640,927,308.90 × 708,437,392,413.38
  4. Step 4: Simplify right side
    1,222,138,976,863.90x = 1,194,879,500,480,402,253,938,688
  5. Step 5: Solve for x
    x = 1,194,879,500,480,402,253,938,688/1,222,138,976,863.90
  6. Step 6: Final answer
    x = 977,695,272,878.50

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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.