Home / 628,441.69-867,098.37-370,329.21

Finding the Fourth Proportional to 628,441.69, 867,098.37 and 370,329.21

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Solution

The fourth proportional to 628,441.69, 867,098.37 and 370,329.21 is: 510,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,441.69 : 867,098.37 = 370,329.21 : x
  2. Step 2: Convert to fraction form
    628,441.69/867,098.37 = 370,329.21/x
  3. Step 3: Cross multiply
    628,441.69x = 867,098.37 × 370,329.21
  4. Step 4: Simplify right side
    628,441.69x = 321,111,854,354.39
  5. Step 5: Solve for x
    x = 321,111,854,354.39/628,441.69
  6. Step 6: Final answer
    x = 510,965.23

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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.