Home / 877,757.20-1,316,635.80-809,328.40

Finding the Fourth Proportional to 877,757.20, 1,316,635.80 and 809,328.40

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Solution

The fourth proportional to 877,757.20, 1,316,635.80 and 809,328.40 is: 1,213,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,757.20 : 1,316,635.80 = 809,328.40 : x
  2. Step 2: Convert to fraction form
    877,757.20/1,316,635.80 = 809,328.40/x
  3. Step 3: Cross multiply
    877,757.20x = 1,316,635.80 × 809,328.40
  4. Step 4: Simplify right side
    877,757.20x = 1,065,590,745,396.72
  5. Step 5: Solve for x
    x = 1,065,590,745,396.72/877,757.20
  6. Step 6: Final answer
    x = 1,213,992.60

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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.