Home / 648,106.20-972,159.30-620,112.60

Finding the Fourth Proportional to 648,106.20, 972,159.30 and 620,112.60

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Solution

The fourth proportional to 648,106.20, 972,159.30 and 620,112.60 is: 930,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,106.20 : 972,159.30 = 620,112.60 : x
  2. Step 2: Convert to fraction form
    648,106.20/972,159.30 = 620,112.60/x
  3. Step 3: Cross multiply
    648,106.20x = 972,159.30 × 620,112.60
  4. Step 4: Simplify right side
    648,106.20x = 602,848,231,137.18
  5. Step 5: Solve for x
    x = 602,848,231,137.18/648,106.20
  6. Step 6: Final answer
    x = 930,168.90

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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.