Home / 605,442.09-907,718.40-290,120.43

Finding the Fourth Proportional to 605,442.09, 907,718.40 and 290,120.43

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Solution

The fourth proportional to 605,442.09, 907,718.40 and 290,120.43 is: 434,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,442.09 : 907,718.40 = 290,120.43 : x
  2. Step 2: Convert to fraction form
    605,442.09/907,718.40 = 290,120.43/x
  3. Step 3: Cross multiply
    605,442.09x = 907,718.40 × 290,120.43
  4. Step 4: Simplify right side
    605,442.09x = 263,347,652,526.91
  5. Step 5: Solve for x
    x = 263,347,652,526.91/605,442.09
  6. Step 6: Final answer
    x = 434,967.53

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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.