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Finding the Fourth Proportional to 613,490.42, 846,397.64 and 355,226.42

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Solution

The fourth proportional to 613,490.42, 846,397.64 and 355,226.42 is: 490,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,490.42 : 846,397.64 = 355,226.42 : x
  2. Step 2: Convert to fraction form
    613,490.42/846,397.64 = 355,226.42/x
  3. Step 3: Cross multiply
    613,490.42x = 846,397.64 × 355,226.42
  4. Step 4: Simplify right side
    613,490.42x = 300,662,803,553.65
  5. Step 5: Solve for x
    x = 300,662,803,553.65/613,490.42
  6. Step 6: Final answer
    x = 490,085.57

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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.