Home / 860,629.20-1,290,943.80-622,856.40

Finding the Fourth Proportional to 860,629.20, 1,290,943.80 and 622,856.40

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Solution

The fourth proportional to 860,629.20, 1,290,943.80 and 622,856.40 is: 934,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,629.20 : 1,290,943.80 = 622,856.40 : x
  2. Step 2: Convert to fraction form
    860,629.20/1,290,943.80 = 622,856.40/x
  3. Step 3: Cross multiply
    860,629.20x = 1,290,943.80 × 622,856.40
  4. Step 4: Simplify right side
    860,629.20x = 804,072,607,870.32
  5. Step 5: Solve for x
    x = 804,072,607,870.32/860,629.20
  6. Step 6: Final answer
    x = 934,284.60

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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.