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Finding the Fourth Proportional to 659,359.80, 989,039.70 and 446,783.40

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Solution

The fourth proportional to 659,359.80, 989,039.70 and 446,783.40 is: 670,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,359.80 : 989,039.70 = 446,783.40 : x
  2. Step 2: Convert to fraction form
    659,359.80/989,039.70 = 446,783.40/x
  3. Step 3: Cross multiply
    659,359.80x = 989,039.70 × 446,783.40
  4. Step 4: Simplify right side
    659,359.80x = 441,886,519,900.98
  5. Step 5: Solve for x
    x = 441,886,519,900.98/659,359.80
  6. Step 6: Final answer
    x = 670,175.10

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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.