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Finding the Fourth Proportional to 635,628.74, 877,172.87 and 349,155.23

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Solution

The fourth proportional to 635,628.74, 877,172.87 and 349,155.23 is: 481,837.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,628.74 : 877,172.87 = 349,155.23 : x
  2. Step 2: Convert to fraction form
    635,628.74/877,172.87 = 349,155.23/x
  3. Step 3: Cross multiply
    635,628.74x = 877,172.87 × 349,155.23
  4. Step 4: Simplify right side
    635,628.74x = 306,269,495,174.61
  5. Step 5: Solve for x
    x = 306,269,495,174.61/635,628.74
  6. Step 6: Final answer
    x = 481,837.08

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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.