Home / 1,124,299,642,765.20-1,551,533,507,015.80-643,123,395,427.15

Finding the Fourth Proportional to 1,124,299,642,765.20, 1,551,533,507,015.80 and 643,123,395,427.15

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Solution

The fourth proportional to 1,124,299,642,765.20, 1,551,533,507,015.80 and 643,123,395,427.15 is: 887,510,285,689.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,299,642,765.20 : 1,551,533,507,015.80 = 643,123,395,427.15 : x
  2. Step 2: Convert to fraction form
    1,124,299,642,765.20/1,551,533,507,015.80 = 643,123,395,427.15/x
  3. Step 3: Cross multiply
    1,124,299,642,765.20x = 1,551,533,507,015.80 × 643,123,395,427.15
  4. Step 4: Simplify right side
    1,124,299,642,765.20x = 997,827,497,150,995,169,804,288
  5. Step 5: Solve for x
    x = 997,827,497,150,995,169,804,288/1,124,299,642,765.20
  6. Step 6: Final answer
    x = 887,510,285,689.37

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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.