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Finding the Fourth Proportional to 840,893.85, 1,260,590.85 and 308,290.77

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Solution

The fourth proportional to 840,893.85, 1,260,590.85 and 308,290.77 is: 462,161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,893.85 : 1,260,590.85 = 308,290.77 : x
  2. Step 2: Convert to fraction form
    840,893.85/1,260,590.85 = 308,290.77/x
  3. Step 3: Cross multiply
    840,893.85x = 1,260,590.85 × 308,290.77
  4. Step 4: Simplify right side
    840,893.85x = 388,628,523,801.46
  5. Step 5: Solve for x
    x = 388,628,523,801.46/840,893.85
  6. Step 6: Final answer
    x = 462,161.22

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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.