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Finding the Fourth Proportional to 635,297.28, 876,711.20 and 348,835.64

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Solution

The fourth proportional to 635,297.28, 876,711.20 and 348,835.64 is: 481,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,297.28 : 876,711.20 = 348,835.64 : x
  2. Step 2: Convert to fraction form
    635,297.28/876,711.20 = 348,835.64/x
  3. Step 3: Cross multiply
    635,297.28x = 876,711.20 × 348,835.64
  4. Step 4: Simplify right side
    635,297.28x = 305,828,112,547.17
  5. Step 5: Solve for x
    x = 305,828,112,547.17/635,297.28
  6. Step 6: Final answer
    x = 481,393.71

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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.