Home / 904,766.96-1,355,082.82-431,784.47

Finding the Fourth Proportional to 904,766.96, 1,355,082.82 and 431,784.47

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Solution

The fourth proportional to 904,766.96, 1,355,082.82 and 431,784.47 is: 646,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,766.96 : 1,355,082.82 = 431,784.47 : x
  2. Step 2: Convert to fraction form
    904,766.96/1,355,082.82 = 431,784.47/x
  3. Step 3: Cross multiply
    904,766.96x = 1,355,082.82 × 431,784.47
  4. Step 4: Simplify right side
    904,766.96x = 585,103,719,548.05
  5. Step 5: Solve for x
    x = 585,103,719,548.05/904,766.96
  6. Step 6: Final answer
    x = 646,689.97

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1.5x scale

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.