Home / 656,828.19-906,422.40-355,022.19

Finding the Fourth Proportional to 656,828.19, 906,422.40 and 355,022.19

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Solution

The fourth proportional to 656,828.19, 906,422.40 and 355,022.19 is: 489,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,828.19 : 906,422.40 = 355,022.19 : x
  2. Step 2: Convert to fraction form
    656,828.19/906,422.40 = 355,022.19/x
  3. Step 3: Cross multiply
    656,828.19x = 906,422.40 × 355,022.19
  4. Step 4: Simplify right side
    656,828.19x = 321,800,065,513.06
  5. Step 5: Solve for x
    x = 321,800,065,513.06/656,828.19
  6. Step 6: Final answer
    x = 489,930.35

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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.