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Finding the Fourth Proportional to 659,347.80, 989,021.70 and 446,771.40

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Solution

The fourth proportional to 659,347.80, 989,021.70 and 446,771.40 is: 670,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,347.80 : 989,021.70 = 446,771.40 : x
  2. Step 2: Convert to fraction form
    659,347.80/989,021.70 = 446,771.40/x
  3. Step 3: Cross multiply
    659,347.80x = 989,021.70 × 446,771.40
  4. Step 4: Simplify right side
    659,347.80x = 441,866,609,539.38
  5. Step 5: Solve for x
    x = 441,866,609,539.38/659,347.80
  6. Step 6: Final answer
    x = 670,157.10

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Similar ratio
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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.