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Finding the Fourth Proportional to 635,387.40, 876,777.48 and 348,901.20

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Solution

The fourth proportional to 635,387.40, 876,777.48 and 348,901.20 is: 481,452.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,387.40 : 876,777.48 = 348,901.20 : x
  2. Step 2: Convert to fraction form
    635,387.40/876,777.48 = 348,901.20/x
  3. Step 3: Cross multiply
    635,387.40x = 876,777.48 × 348,901.20
  4. Step 4: Simplify right side
    635,387.40x = 305,908,714,904.98
  5. Step 5: Solve for x
    x = 305,908,714,904.98/635,387.40
  6. Step 6: Final answer
    x = 481,452.28

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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.