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Finding the Fourth Proportional to 635,278.56, 876,686.13 and 348,817.20

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Solution

The fourth proportional to 635,278.56, 876,686.13 and 348,817.20 is: 481,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,278.56 : 876,686.13 = 348,817.20 : x
  2. Step 2: Convert to fraction form
    635,278.56/876,686.13 = 348,817.20/x
  3. Step 3: Cross multiply
    635,278.56x = 876,686.13 × 348,817.20
  4. Step 4: Simplify right side
    635,278.56x = 305,803,201,145.44
  5. Step 5: Solve for x
    x = 305,803,201,145.44/635,278.56
  6. Step 6: Final answer
    x = 481,368.68

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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.