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Finding the Fourth Proportional to 635,278.55, 876,685.91 and 348,817.09

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Solution

The fourth proportional to 635,278.55, 876,685.91 and 348,817.09 is: 481,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,278.55 : 876,685.91 = 348,817.09 : x
  2. Step 2: Convert to fraction form
    635,278.55/876,685.91 = 348,817.09/x
  3. Step 3: Cross multiply
    635,278.55x = 876,685.91 × 348,817.09
  4. Step 4: Simplify right side
    635,278.55x = 305,803,021,842.69
  5. Step 5: Solve for x
    x = 305,803,021,842.69/635,278.55
  6. Step 6: Final answer
    x = 481,368.40

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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.