Home / 430,260.06-645,180.84-259,657.59

Finding the Fourth Proportional to 430,260.06, 645,180.84 and 259,657.59

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Solution

The fourth proportional to 430,260.06, 645,180.84 and 259,657.59 is: 389,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,260.06 : 645,180.84 = 259,657.59 : x
  2. Step 2: Convert to fraction form
    430,260.06/645,180.84 = 259,657.59/x
  3. Step 3: Cross multiply
    430,260.06x = 645,180.84 × 259,657.59
  4. Step 4: Simplify right side
    430,260.06x = 167,526,102,028.58
  5. Step 5: Solve for x
    x = 167,526,102,028.58/430,260.06
  6. Step 6: Final answer
    x = 389,360.10

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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.