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Finding the Fourth Proportional to 347,687.60, 487,812.40 and 347,687.60

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Solution

The fourth proportional to 347,687.60, 487,812.40 and 347,687.60 is: 487,812.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,687.60 : 487,812.40 = 347,687.60 : x
  2. Step 2: Convert to fraction form
    347,687.60/487,812.40 = 347,687.60/x
  3. Step 3: Cross multiply
    347,687.60x = 487,812.40 × 347,687.60
  4. Step 4: Simplify right side
    347,687.60x = 169,606,322,606.24
  5. Step 5: Solve for x
    x = 169,606,322,606.24/347,687.60
  6. Step 6: Final answer
    x = 487,812.40

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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.