Home / 739,145.32-1,020,020.62-399,613.48

Finding the Fourth Proportional to 739,145.32, 1,020,020.62 and 399,613.48

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Solution

The fourth proportional to 739,145.32, 1,020,020.62 and 399,613.48 is: 551,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,145.32 : 1,020,020.62 = 399,613.48 : x
  2. Step 2: Convert to fraction form
    739,145.32/1,020,020.62 = 399,613.48/x
  3. Step 3: Cross multiply
    739,145.32x = 1,020,020.62 × 399,613.48
  4. Step 4: Simplify right side
    739,145.32x = 407,613,989,629.96
  5. Step 5: Solve for x
    x = 407,613,989,629.96/739,145.32
  6. Step 6: Final answer
    x = 551,466.64

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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.