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Finding the Fourth Proportional to 648,016.30, 972,024.45 and 618,491.80

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Solution

The fourth proportional to 648,016.30, 972,024.45 and 618,491.80 is: 927,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,016.30 : 972,024.45 = 618,491.80 : x
  2. Step 2: Convert to fraction form
    648,016.30/972,024.45 = 618,491.80/x
  3. Step 3: Cross multiply
    648,016.30x = 972,024.45 × 618,491.80
  4. Step 4: Simplify right side
    648,016.30x = 601,189,151,724.51
  5. Step 5: Solve for x
    x = 601,189,151,724.51/648,016.30
  6. Step 6: Final answer
    x = 927,737.70

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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.