Home / 855,250.83-1,283,118.44-428,271.21

Finding the Fourth Proportional to 855,250.83, 1,283,118.44 and 428,271.21

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Solution

The fourth proportional to 855,250.83, 1,283,118.44 and 428,271.21 is: 642,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,250.83 : 1,283,118.44 = 428,271.21 : x
  2. Step 2: Convert to fraction form
    855,250.83/1,283,118.44 = 428,271.21/x
  3. Step 3: Cross multiply
    855,250.83x = 1,283,118.44 × 428,271.21
  4. Step 4: Simplify right side
    855,250.83x = 549,522,684,730.76
  5. Step 5: Solve for x
    x = 549,522,684,730.76/855,250.83
  6. Step 6: Final answer
    x = 642,528.09

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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.