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Finding the Fourth Proportional to 339,679.60, 509,519.40 and 334,430.80

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Solution

The fourth proportional to 339,679.60, 509,519.40 and 334,430.80 is: 501,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,679.60 : 509,519.40 = 334,430.80 : x
  2. Step 2: Convert to fraction form
    339,679.60/509,519.40 = 334,430.80/x
  3. Step 3: Cross multiply
    339,679.60x = 509,519.40 × 334,430.80
  4. Step 4: Simplify right side
    339,679.60x = 170,398,980,557.52
  5. Step 5: Solve for x
    x = 170,398,980,557.52/339,679.60
  6. Step 6: Final answer
    x = 501,646.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.