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Finding the Fourth Proportional to 626,223.65, 864,231.44 and 354,291.48

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Solution

The fourth proportional to 626,223.65, 864,231.44 and 354,291.48 is: 488,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,223.65 : 864,231.44 = 354,291.48 : x
  2. Step 2: Convert to fraction form
    626,223.65/864,231.44 = 354,291.48/x
  3. Step 3: Cross multiply
    626,223.65x = 864,231.44 × 354,291.48
  4. Step 4: Simplify right side
    626,223.65x = 306,189,834,168.67
  5. Step 5: Solve for x
    x = 306,189,834,168.67/626,223.65
  6. Step 6: Final answer
    x = 488,946.46

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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.