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Finding the Fourth Proportional to 406,934.40, 610,401.60 and 340,449.60

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Solution

The fourth proportional to 406,934.40, 610,401.60 and 340,449.60 is: 510,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,934.40 : 610,401.60 = 340,449.60 : x
  2. Step 2: Convert to fraction form
    406,934.40/610,401.60 = 340,449.60/x
  3. Step 3: Cross multiply
    406,934.40x = 610,401.60 × 340,449.60
  4. Step 4: Simplify right side
    406,934.40x = 207,810,980,559.36
  5. Step 5: Solve for x
    x = 207,810,980,559.36/406,934.40
  6. Step 6: Final answer
    x = 510,674.40

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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.