Home / 1,124,299,642,809.40-1,551,533,507,077.50-643,123,395,471.36

Finding the Fourth Proportional to 1,124,299,642,809.40, 1,551,533,507,077.50 and 643,123,395,471.36

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Solution

The fourth proportional to 1,124,299,642,809.40, 1,551,533,507,077.50 and 643,123,395,471.36 is: 887,510,285,750.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,299,642,809.40 : 1,551,533,507,077.50 = 643,123,395,471.36 : x
  2. Step 2: Convert to fraction form
    1,124,299,642,809.40/1,551,533,507,077.50 = 643,123,395,471.36/x
  3. Step 3: Cross multiply
    1,124,299,642,809.40x = 1,551,533,507,077.50 × 643,123,395,471.36
  4. Step 4: Simplify right side
    1,124,299,642,809.40x = 997,827,497,259,269,147,852,800
  5. Step 5: Solve for x
    x = 997,827,497,259,269,147,852,800/1,124,299,642,809.40
  6. Step 6: Final answer
    x = 887,510,285,750.78

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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.