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Finding the Fourth Proportional to 484,470.80, 726,829.08 and 318,582.80

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Solution

The fourth proportional to 484,470.80, 726,829.08 and 318,582.80 is: 477,955.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,470.80 : 726,829.08 = 318,582.80 : x
  2. Step 2: Convert to fraction form
    484,470.80/726,829.08 = 318,582.80/x
  3. Step 3: Cross multiply
    484,470.80x = 726,829.08 × 318,582.80
  4. Step 4: Simplify right side
    484,470.80x = 231,555,243,427.82
  5. Step 5: Solve for x
    x = 231,555,243,427.82/484,470.80
  6. Step 6: Final answer
    x = 477,955.00

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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.