Home / 688,019.40-1,030,473.90-408,083.40

Finding the Fourth Proportional to 688,019.40, 1,030,473.90 and 408,083.40

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Solution

The fourth proportional to 688,019.40, 1,030,473.90 and 408,083.40 is: 611,202.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,019.40 : 1,030,473.90 = 408,083.40 : x
  2. Step 2: Convert to fraction form
    688,019.40/1,030,473.90 = 408,083.40/x
  3. Step 3: Cross multiply
    688,019.40x = 1,030,473.90 × 408,083.40
  4. Step 4: Simplify right side
    688,019.40x = 420,519,292,723.26
  5. Step 5: Solve for x
    x = 420,519,292,723.26/688,019.40
  6. Step 6: Final answer
    x = 611,202.67

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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.