Home / 1,490,567,860.39-2,056,977,431.51-821,511,308.48

Finding the Fourth Proportional to 1,490,567,860.39, 2,056,977,431.51 and 821,511,308.48

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Solution

The fourth proportional to 1,490,567,860.39, 2,056,977,431.51 and 821,511,308.48 is: 1,133,682,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,567,860.39 : 2,056,977,431.51 = 821,511,308.48 : x
  2. Step 2: Convert to fraction form
    1,490,567,860.39/2,056,977,431.51 = 821,511,308.48/x
  3. Step 3: Cross multiply
    1,490,567,860.39x = 2,056,977,431.51 × 821,511,308.48
  4. Step 4: Simplify right side
    1,490,567,860.39x = 1,689,830,221,269,502,208
  5. Step 5: Solve for x
    x = 1,689,830,221,269,502,208/1,490,567,860.39
  6. Step 6: Final answer
    x = 1,133,682,179.91

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1.5x scale

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.