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Finding the Fourth Proportional to 605,090.90, 909,185.48 and 456,728.46

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Solution

The fourth proportional to 605,090.90, 909,185.48 and 456,728.46 is: 686,261.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,090.90 : 909,185.48 = 456,728.46 : x
  2. Step 2: Convert to fraction form
    605,090.90/909,185.48 = 456,728.46/x
  3. Step 3: Cross multiply
    605,090.90x = 909,185.48 × 456,728.46
  4. Step 4: Simplify right side
    605,090.90x = 415,250,885,260.56
  5. Step 5: Solve for x
    x = 415,250,885,260.56/605,090.90
  6. Step 6: Final answer
    x = 686,261.99

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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.