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Finding the Fourth Proportional to 577,075.30, 796,405.15 and 318,946.70

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Solution

The fourth proportional to 577,075.30, 796,405.15 and 318,946.70 is: 440,169.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,075.30 : 796,405.15 = 318,946.70 : x
  2. Step 2: Convert to fraction form
    577,075.30/796,405.15 = 318,946.70/x
  3. Step 3: Cross multiply
    577,075.30x = 796,405.15 × 318,946.70
  4. Step 4: Simplify right side
    577,075.30x = 254,010,790,571.35
  5. Step 5: Solve for x
    x = 254,010,790,571.35/577,075.30
  6. Step 6: Final answer
    x = 440,169.23

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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.