Home / 811,873.68-1,120,362.48-449,312.64

Finding the Fourth Proportional to 811,873.68, 1,120,362.48 and 449,312.64

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Solution

The fourth proportional to 811,873.68, 1,120,362.48 and 449,312.64 is: 620,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,873.68 : 1,120,362.48 = 449,312.64 : x
  2. Step 2: Convert to fraction form
    811,873.68/1,120,362.48 = 449,312.64/x
  3. Step 3: Cross multiply
    811,873.68x = 1,120,362.48 × 449,312.64
  4. Step 4: Simplify right side
    811,873.68x = 503,393,023,645.75
  5. Step 5: Solve for x
    x = 503,393,023,645.75/811,873.68
  6. Step 6: Final answer
    x = 620,038.60

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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.