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Finding the Fourth Proportional to 648,002.40, 973,040.40 and 438,568.80

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Solution

The fourth proportional to 648,002.40, 973,040.40 and 438,568.80 is: 658,554.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.40 : 973,040.40 = 438,568.80 : x
  2. Step 2: Convert to fraction form
    648,002.40/973,040.40 = 438,568.80/x
  3. Step 3: Cross multiply
    648,002.40x = 973,040.40 × 438,568.80
  4. Step 4: Simplify right side
    648,002.40x = 426,745,160,579.52
  5. Step 5: Solve for x
    x = 426,745,160,579.52/648,002.40
  6. Step 6: Final answer
    x = 658,554.91

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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.