Home / 1,218,185,039.75-1,681,097,485.88-661,268,464.07

Finding the Fourth Proportional to 1,218,185,039.75, 1,681,097,485.88 and 661,268,464.07

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Solution

The fourth proportional to 1,218,185,039.75, 1,681,097,485.88 and 661,268,464.07 is: 912,551,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,185,039.75 : 1,681,097,485.88 = 661,268,464.07 : x
  2. Step 2: Convert to fraction form
    1,218,185,039.75/1,681,097,485.88 = 661,268,464.07/x
  3. Step 3: Cross multiply
    1,218,185,039.75x = 1,681,097,485.88 × 661,268,464.07
  4. Step 4: Simplify right side
    1,218,185,039.75x = 1,111,656,752,440,702,464
  5. Step 5: Solve for x
    x = 1,111,656,752,440,702,464/1,218,185,039.75
  6. Step 6: Final answer
    x = 912,551,637.20

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Double scale
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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.