Home / 859,512.50-1,289,125.76-260,331.20

Finding the Fourth Proportional to 859,512.50, 1,289,125.76 and 260,331.20

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Solution

The fourth proportional to 859,512.50, 1,289,125.76 and 260,331.20 is: 390,453.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,512.50 : 1,289,125.76 = 260,331.20 : x
  2. Step 2: Convert to fraction form
    859,512.50/1,289,125.76 = 260,331.20/x
  3. Step 3: Cross multiply
    859,512.50x = 1,289,125.76 × 260,331.20
  4. Step 4: Simplify right side
    859,512.50x = 335,599,656,051.71
  5. Step 5: Solve for x
    x = 335,599,656,051.71/859,512.50
  6. Step 6: Final answer
    x = 390,453.49

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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.