Home / 656,288.25-905,678.40-354,482.25

Finding the Fourth Proportional to 656,288.25, 905,678.40 and 354,482.25

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Solution

The fourth proportional to 656,288.25, 905,678.40 and 354,482.25 is: 489,185.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,288.25 : 905,678.40 = 354,482.25 : x
  2. Step 2: Convert to fraction form
    656,288.25/905,678.40 = 354,482.25/x
  3. Step 3: Cross multiply
    656,288.25x = 905,678.40 × 354,482.25
  4. Step 4: Simplify right side
    656,288.25x = 321,046,917,008.40
  5. Step 5: Solve for x
    x = 321,046,917,008.40/656,288.25
  6. Step 6: Final answer
    x = 489,185.84

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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.