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Finding the Fourth Proportional to 648,004.80, 972,007.20 and 480,043.20

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Solution

The fourth proportional to 648,004.80, 972,007.20 and 480,043.20 is: 720,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,004.80 : 972,007.20 = 480,043.20 : x
  2. Step 2: Convert to fraction form
    648,004.80/972,007.20 = 480,043.20/x
  3. Step 3: Cross multiply
    648,004.80x = 972,007.20 × 480,043.20
  4. Step 4: Simplify right side
    648,004.80x = 466,605,446,711.04
  5. Step 5: Solve for x
    x = 466,605,446,711.04/648,004.80
  6. Step 6: Final answer
    x = 720,064.80

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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.