Home / 648,435.20-972,069.60-423,903.20

Finding the Fourth Proportional to 648,435.20, 972,069.60 and 423,903.20

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Solution

The fourth proportional to 648,435.20, 972,069.60 and 423,903.20 is: 635,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,435.20 : 972,069.60 = 423,903.20 : x
  2. Step 2: Convert to fraction form
    648,435.20/972,069.60 = 423,903.20/x
  3. Step 3: Cross multiply
    648,435.20x = 972,069.60 × 423,903.20
  4. Step 4: Simplify right side
    648,435.20x = 412,063,414,062.72
  5. Step 5: Solve for x
    x = 412,063,414,062.72/648,435.20
  6. Step 6: Final answer
    x = 635,473.54

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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.