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Finding the Fourth Proportional to 614,499.26, 847,528.25 and 399,707.91

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Solution

The fourth proportional to 614,499.26, 847,528.25 and 399,707.91 is: 551,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,499.26 : 847,528.25 = 399,707.91 : x
  2. Step 2: Convert to fraction form
    614,499.26/847,528.25 = 399,707.91/x
  3. Step 3: Cross multiply
    614,499.26x = 847,528.25 × 399,707.91
  4. Step 4: Simplify right side
    614,499.26x = 338,763,743,474.92
  5. Step 5: Solve for x
    x = 338,763,743,474.92/614,499.26
  6. Step 6: Final answer
    x = 551,284.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.