Home / 740,328.39-1,021,645.31-418,019.40

Finding the Fourth Proportional to 740,328.39, 1,021,645.31 and 418,019.40

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Solution

The fourth proportional to 740,328.39, 1,021,645.31 and 418,019.40 is: 576,862.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,328.39 : 1,021,645.31 = 418,019.40 : x
  2. Step 2: Convert to fraction form
    740,328.39/1,021,645.31 = 418,019.40/x
  3. Step 3: Cross multiply
    740,328.39x = 1,021,645.31 × 418,019.40
  4. Step 4: Simplify right side
    740,328.39x = 427,067,557,408.92
  5. Step 5: Solve for x
    x = 427,067,557,408.92/740,328.39
  6. Step 6: Final answer
    x = 576,862.33

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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.