Home / 859,969.90-1,289,626.80-260,731.90

Finding the Fourth Proportional to 859,969.90, 1,289,626.80 and 260,731.90

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Solution

The fourth proportional to 859,969.90, 1,289,626.80 and 260,731.90 is: 390,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,969.90 : 1,289,626.80 = 260,731.90 : x
  2. Step 2: Convert to fraction form
    859,969.90/1,289,626.80 = 260,731.90/x
  3. Step 3: Cross multiply
    859,969.90x = 1,289,626.80 × 260,731.90
  4. Step 4: Simplify right side
    859,969.90x = 336,246,845,854.92
  5. Step 5: Solve for x
    x = 336,246,845,854.92/859,969.90
  6. Step 6: Final answer
    x = 390,998.39

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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.