Home / 777,178.40-1,072,485.24-437,639.36

Finding the Fourth Proportional to 777,178.40, 1,072,485.24 and 437,639.36

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Solution

The fourth proportional to 777,178.40, 1,072,485.24 and 437,639.36 is: 603,930.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,178.40 : 1,072,485.24 = 437,639.36 : x
  2. Step 2: Convert to fraction form
    777,178.40/1,072,485.24 = 437,639.36/x
  3. Step 3: Cross multiply
    777,178.40x = 1,072,485.24 × 437,639.36
  4. Step 4: Simplify right side
    777,178.40x = 469,361,754,043.05
  5. Step 5: Solve for x
    x = 469,361,754,043.05/777,178.40
  6. Step 6: Final answer
    x = 603,930.52

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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.