Home / 859,416.96-1,289,259.18-260,235.48

Finding the Fourth Proportional to 859,416.96, 1,289,259.18 and 260,235.48

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Solution

The fourth proportional to 859,416.96, 1,289,259.18 and 260,235.48 is: 390,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,416.96 : 1,289,259.18 = 260,235.48 : x
  2. Step 2: Convert to fraction form
    859,416.96/1,289,259.18 = 260,235.48/x
  3. Step 3: Cross multiply
    859,416.96x = 1,289,259.18 × 260,235.48
  4. Step 4: Simplify right side
    859,416.96x = 335,510,981,551.71
  5. Step 5: Solve for x
    x = 335,510,981,551.71/859,416.96
  6. Step 6: Final answer
    x = 390,393.72

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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.