Home / 1,222,312,988,685.40-1,686,742,814,422-666,106,304,610.45

Finding the Fourth Proportional to 1,222,312,988,685.40, 1,686,742,814,422 and 666,106,304,610.45

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Solution

The fourth proportional to 1,222,312,988,685.40, 1,686,742,814,422 and 666,106,304,610.45 is: 919,199,937,612.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,312,988,685.40 : 1,686,742,814,422 = 666,106,304,610.45 : x
  2. Step 2: Convert to fraction form
    1,222,312,988,685.40/1,686,742,814,422 = 666,106,304,610.45/x
  3. Step 3: Cross multiply
    1,222,312,988,685.40x = 1,686,742,814,422 × 666,106,304,610.45
  4. Step 4: Simplify right side
    1,222,312,988,685.40x = 1,123,550,022,942,868,369,309,696
  5. Step 5: Solve for x
    x = 1,123,550,022,942,868,369,309,696/1,222,312,988,685.40
  6. Step 6: Final answer
    x = 919,199,937,612.75

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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.