Home / 862,807.80-1,294,199.55-389,492.40

Finding the Fourth Proportional to 862,807.80, 1,294,199.55 and 389,492.40

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Solution

The fourth proportional to 862,807.80, 1,294,199.55 and 389,492.40 is: 584,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,807.80 : 1,294,199.55 = 389,492.40 : x
  2. Step 2: Convert to fraction form
    862,807.80/1,294,199.55 = 389,492.40/x
  3. Step 3: Cross multiply
    862,807.80x = 1,294,199.55 × 389,492.40
  4. Step 4: Simplify right side
    862,807.80x = 504,080,888,808.42
  5. Step 5: Solve for x
    x = 504,080,888,808.42/862,807.80
  6. Step 6: Final answer
    x = 584,233.12

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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.