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Finding the Fourth Proportional to 637,279.40, 879,445.32 and 350,798

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Solution

The fourth proportional to 637,279.40, 879,445.32 and 350,798 is: 484,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,279.40 : 879,445.32 = 350,798 : x
  2. Step 2: Convert to fraction form
    637,279.40/879,445.32 = 350,798/x
  3. Step 3: Cross multiply
    637,279.40x = 879,445.32 × 350,798
  4. Step 4: Simplify right side
    637,279.40x = 308,507,659,365.36
  5. Step 5: Solve for x
    x = 308,507,659,365.36/637,279.40
  6. Step 6: Final answer
    x = 484,101.10

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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.