Home / 721,666.67-1,083,338.55-422,362.05

Finding the Fourth Proportional to 721,666.67, 1,083,338.55 and 422,362.05

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Solution

The fourth proportional to 721,666.67, 1,083,338.55 and 422,362.05 is: 634,033.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,666.67 : 1,083,338.55 = 422,362.05 : x
  2. Step 2: Convert to fraction form
    721,666.67/1,083,338.55 = 422,362.05/x
  3. Step 3: Cross multiply
    721,666.67x = 1,083,338.55 × 422,362.05
  4. Step 4: Simplify right side
    721,666.67x = 457,561,086,759.51
  5. Step 5: Solve for x
    x = 457,561,086,759.51/721,666.67
  6. Step 6: Final answer
    x = 634,033.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.