Home / 481,869.83-664,980.15-288,285.72

Finding the Fourth Proportional to 481,869.83, 664,980.15 and 288,285.72

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Solution

The fourth proportional to 481,869.83, 664,980.15 and 288,285.72 is: 397,834.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,869.83 : 664,980.15 = 288,285.72 : x
  2. Step 2: Convert to fraction form
    481,869.83/664,980.15 = 288,285.72/x
  3. Step 3: Cross multiply
    481,869.83x = 664,980.15 × 288,285.72
  4. Step 4: Simplify right side
    481,869.83x = 191,704,283,905.02
  5. Step 5: Solve for x
    x = 191,704,283,905.02/481,869.83
  6. Step 6: Final answer
    x = 397,834.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.