Home / 648,832.40-972,586.20-438,491.60

Finding the Fourth Proportional to 648,832.40, 972,586.20 and 438,491.60

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Solution

The fourth proportional to 648,832.40, 972,586.20 and 438,491.60 is: 657,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,832.40 : 972,586.20 = 438,491.60 : x
  2. Step 2: Convert to fraction form
    648,832.40/972,586.20 = 438,491.60/x
  3. Step 3: Cross multiply
    648,832.40x = 972,586.20 × 438,491.60
  4. Step 4: Simplify right side
    648,832.40x = 426,470,878,975.92
  5. Step 5: Solve for x
    x = 426,470,878,975.92/648,832.40
  6. Step 6: Final answer
    x = 657,289.74

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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.