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Finding the Fourth Proportional to 648,908.20, 973,362.30 and 383,187.70

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Solution

The fourth proportional to 648,908.20, 973,362.30 and 383,187.70 is: 574,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,908.20 : 973,362.30 = 383,187.70 : x
  2. Step 2: Convert to fraction form
    648,908.20/973,362.30 = 383,187.70/x
  3. Step 3: Cross multiply
    648,908.20x = 973,362.30 × 383,187.70
  4. Step 4: Simplify right side
    648,908.20x = 372,980,461,003.71
  5. Step 5: Solve for x
    x = 372,980,461,003.71/648,908.20
  6. Step 6: Final answer
    x = 574,781.55

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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.