Home / 879,415.20-1,322,038.80-763,941.60

Finding the Fourth Proportional to 879,415.20, 1,322,038.80 and 763,941.60

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Solution

The fourth proportional to 879,415.20, 1,322,038.80 and 763,941.60 is: 1,148,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,415.20 : 1,322,038.80 = 763,941.60 : x
  2. Step 2: Convert to fraction form
    879,415.20/1,322,038.80 = 763,941.60/x
  3. Step 3: Cross multiply
    879,415.20x = 1,322,038.80 × 763,941.60
  4. Step 4: Simplify right side
    879,415.20x = 1,009,960,436,134.08
  5. Step 5: Solve for x
    x = 1,009,960,436,134.08/879,415.20
  6. Step 6: Final answer
    x = 1,148,445.51

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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.