Home / 908,421.30-1,362,842.82-309,387.66

Finding the Fourth Proportional to 908,421.30, 1,362,842.82 and 309,387.66

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Solution

The fourth proportional to 908,421.30, 1,362,842.82 and 309,387.66 is: 464,153.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,421.30 : 1,362,842.82 = 309,387.66 : x
  2. Step 2: Convert to fraction form
    908,421.30/1,362,842.82 = 309,387.66/x
  3. Step 3: Cross multiply
    908,421.30x = 1,362,842.82 × 309,387.66
  4. Step 4: Simplify right side
    908,421.30x = 421,646,751,027.60
  5. Step 5: Solve for x
    x = 421,646,751,027.60/908,421.30
  6. Step 6: Final answer
    x = 464,153.31

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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.