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Finding the Fourth Proportional to 648,448.60, 972,672 and 360,443.32

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Solution

The fourth proportional to 648,448.60, 972,672 and 360,443.32 is: 540,664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,448.60 : 972,672 = 360,443.32 : x
  2. Step 2: Convert to fraction form
    648,448.60/972,672 = 360,443.32/x
  3. Step 3: Cross multiply
    648,448.60x = 972,672 × 360,443.32
  4. Step 4: Simplify right side
    648,448.60x = 350,593,124,951.04
  5. Step 5: Solve for x
    x = 350,593,124,951.04/648,448.60
  6. Step 6: Final answer
    x = 540,664.48

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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.