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Finding the Fourth Proportional to 658,300.40, 987,450.60 and 606,978.80

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Solution

The fourth proportional to 658,300.40, 987,450.60 and 606,978.80 is: 910,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,300.40 : 987,450.60 = 606,978.80 : x
  2. Step 2: Convert to fraction form
    658,300.40/987,450.60 = 606,978.80/x
  3. Step 3: Cross multiply
    658,300.40x = 987,450.60 × 606,978.80
  4. Step 4: Simplify right side
    658,300.40x = 599,361,580,247.28
  5. Step 5: Solve for x
    x = 599,361,580,247.28/658,300.40
  6. Step 6: Final answer
    x = 910,468.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.