Home / 859,968.90-1,289,625.30-260,730.90

Finding the Fourth Proportional to 859,968.90, 1,289,625.30 and 260,730.90

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Solution

The fourth proportional to 859,968.90, 1,289,625.30 and 260,730.90 is: 390,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,968.90 : 1,289,625.30 = 260,730.90 : x
  2. Step 2: Convert to fraction form
    859,968.90/1,289,625.30 = 260,730.90/x
  3. Step 3: Cross multiply
    859,968.90x = 1,289,625.30 × 260,730.90
  4. Step 4: Simplify right side
    859,968.90x = 336,245,165,131.77
  5. Step 5: Solve for x
    x = 336,245,165,131.77/859,968.90
  6. Step 6: Final answer
    x = 390,996.89

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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.