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Finding the Fourth Proportional to 347,679.60, 487,801.20 and 347,679.60

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Solution

The fourth proportional to 347,679.60, 487,801.20 and 347,679.60 is: 487,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,679.60 : 487,801.20 = 347,679.60 : x
  2. Step 2: Convert to fraction form
    347,679.60/487,801.20 = 347,679.60/x
  3. Step 3: Cross multiply
    347,679.60x = 487,801.20 × 347,679.60
  4. Step 4: Simplify right side
    347,679.60x = 169,598,526,095.52
  5. Step 5: Solve for x
    x = 169,598,526,095.52/347,679.60
  6. Step 6: Final answer
    x = 487,801.20

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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.