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Finding the Fourth Proportional to 655,708.87, 983,835.62 and 313,980.40

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Solution

The fourth proportional to 655,708.87, 983,835.62 and 313,980.40 is: 471,101.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,708.87 : 983,835.62 = 313,980.40 : x
  2. Step 2: Convert to fraction form
    655,708.87/983,835.62 = 313,980.40/x
  3. Step 3: Cross multiply
    655,708.87x = 983,835.62 × 313,980.40
  4. Step 4: Simplify right side
    655,708.87x = 308,905,102,339.17
  5. Step 5: Solve for x
    x = 308,905,102,339.17/655,708.87
  6. Step 6: Final answer
    x = 471,101.00

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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.