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Finding the Fourth Proportional to 679,770.32, 1,019,551.80 and 380,066

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Solution

The fourth proportional to 679,770.32, 1,019,551.80 and 380,066 is: 570,041.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,770.32 : 1,019,551.80 = 380,066 : x
  2. Step 2: Convert to fraction form
    679,770.32/1,019,551.80 = 380,066/x
  3. Step 3: Cross multiply
    679,770.32x = 1,019,551.80 × 380,066
  4. Step 4: Simplify right side
    679,770.32x = 387,496,974,418.80
  5. Step 5: Solve for x
    x = 387,496,974,418.80/679,770.32
  6. Step 6: Final answer
    x = 570,041.03

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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.