Home / 905,282.30-1,249,269.48-491,808.38

Finding the Fourth Proportional to 905,282.30, 1,249,269.48 and 491,808.38

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Solution

The fourth proportional to 905,282.30, 1,249,269.48 and 491,808.38 is: 678,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,282.30 : 1,249,269.48 = 491,808.38 : x
  2. Step 2: Convert to fraction form
    905,282.30/1,249,269.48 = 491,808.38/x
  3. Step 3: Cross multiply
    905,282.30x = 1,249,269.48 × 491,808.38
  4. Step 4: Simplify right side
    905,282.30x = 614,401,199,142.24
  5. Step 5: Solve for x
    x = 614,401,199,142.24/905,282.30
  6. Step 6: Final answer
    x = 678,684.65

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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.