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Finding the Fourth Proportional to 658,819.62, 909,171.54 and 357,013.62

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Solution

The fourth proportional to 658,819.62, 909,171.54 and 357,013.62 is: 492,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,819.62 : 909,171.54 = 357,013.62 : x
  2. Step 2: Convert to fraction form
    658,819.62/909,171.54 = 357,013.62/x
  3. Step 3: Cross multiply
    658,819.62x = 909,171.54 × 357,013.62
  4. Step 4: Simplify right side
    658,819.62x = 324,586,622,696.38
  5. Step 5: Solve for x
    x = 324,586,622,696.38/658,819.62
  6. Step 6: Final answer
    x = 492,679.05

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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.