Home / 879,261.30-1,213,445.70-492,115.56

Finding the Fourth Proportional to 879,261.30, 1,213,445.70 and 492,115.56

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Solution

The fourth proportional to 879,261.30, 1,213,445.70 and 492,115.56 is: 679,155.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,261.30 : 1,213,445.70 = 492,115.56 : x
  2. Step 2: Convert to fraction form
    879,261.30/1,213,445.70 = 492,115.56/x
  3. Step 3: Cross multiply
    879,261.30x = 1,213,445.70 × 492,115.56
  4. Step 4: Simplify right side
    879,261.30x = 597,155,510,185.09
  5. Step 5: Solve for x
    x = 597,155,510,185.09/879,261.30
  6. Step 6: Final answer
    x = 679,155.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.