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Finding the Fourth Proportional to 347,613.40, 487,358.60 and 347,613.40

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Solution

The fourth proportional to 347,613.40, 487,358.60 and 347,613.40 is: 487,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,613.40 : 487,358.60 = 347,613.40 : x
  2. Step 2: Convert to fraction form
    347,613.40/487,358.60 = 347,613.40/x
  3. Step 3: Cross multiply
    347,613.40x = 487,358.60 × 347,613.40
  4. Step 4: Simplify right side
    347,613.40x = 169,412,379,965.24
  5. Step 5: Solve for x
    x = 169,412,379,965.24/347,613.40
  6. Step 6: Final answer
    x = 487,358.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.