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Finding the Fourth Proportional to 648,002.30, 972,003.45 and 618,477.80

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Solution

The fourth proportional to 648,002.30, 972,003.45 and 618,477.80 is: 927,716.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.30 : 972,003.45 = 618,477.80 : x
  2. Step 2: Convert to fraction form
    648,002.30/972,003.45 = 618,477.80/x
  3. Step 3: Cross multiply
    648,002.30x = 972,003.45 × 618,477.80
  4. Step 4: Simplify right side
    648,002.30x = 601,162,555,348.41
  5. Step 5: Solve for x
    x = 601,162,555,348.41/648,002.30
  6. Step 6: Final answer
    x = 927,716.70

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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.