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Finding the Fourth Proportional to 620,401.40, 930,774.90 and 304,868.60

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Solution

The fourth proportional to 620,401.40, 930,774.90 and 304,868.60 is: 457,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,401.40 : 930,774.90 = 304,868.60 : x
  2. Step 2: Convert to fraction form
    620,401.40/930,774.90 = 304,868.60/x
  3. Step 3: Cross multiply
    620,401.40x = 930,774.90 × 304,868.60
  4. Step 4: Simplify right side
    620,401.40x = 283,764,040,678.14
  5. Step 5: Solve for x
    x = 283,764,040,678.14/620,401.40
  6. Step 6: Final answer
    x = 457,387.81

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1.5x scale

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.