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Finding the Fourth Proportional to 658,827, 909,181.26 and 357,021

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Solution

The fourth proportional to 658,827, 909,181.26 and 357,021 is: 492,688.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,827 : 909,181.26 = 357,021 : x
  2. Step 2: Convert to fraction form
    658,827/909,181.26 = 357,021/x
  3. Step 3: Cross multiply
    658,827x = 909,181.26 × 357,021
  4. Step 4: Simplify right side
    658,827x = 324,596,802,626.46
  5. Step 5: Solve for x
    x = 324,596,802,626.46/658,827
  6. Step 6: Final answer
    x = 492,688.98

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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.