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Finding the Fourth Proportional to 837,312.80, 1,255,969.20 and 804,653.60

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Solution

The fourth proportional to 837,312.80, 1,255,969.20 and 804,653.60 is: 1,206,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,312.80 : 1,255,969.20 = 804,653.60 : x
  2. Step 2: Convert to fraction form
    837,312.80/1,255,969.20 = 804,653.60/x
  3. Step 3: Cross multiply
    837,312.80x = 1,255,969.20 × 804,653.60
  4. Step 4: Simplify right side
    837,312.80x = 1,010,620,138,269.12
  5. Step 5: Solve for x
    x = 1,010,620,138,269.12/837,312.80
  6. Step 6: Final answer
    x = 1,206,980.40

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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.