Home / 908,653.89-1,362,980.84-309,306.54

Finding the Fourth Proportional to 908,653.89, 1,362,980.84 and 309,306.54

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Solution

The fourth proportional to 908,653.89, 1,362,980.84 and 309,306.54 is: 463,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,653.89 : 1,362,980.84 = 309,306.54 : x
  2. Step 2: Convert to fraction form
    908,653.89/1,362,980.84 = 309,306.54/x
  3. Step 3: Cross multiply
    908,653.89x = 1,362,980.84 × 309,306.54
  4. Step 4: Simplify right side
    908,653.89x = 421,578,886,160.16
  5. Step 5: Solve for x
    x = 421,578,886,160.16/908,653.89
  6. Step 6: Final answer
    x = 463,959.81

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Double scale
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Similar ratio
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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.