Home / 1,123,075.20-1,683,823.77-393,419.91

Finding the Fourth Proportional to 1,123,075.20, 1,683,823.77 and 393,419.91

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Solution

The fourth proportional to 1,123,075.20, 1,683,823.77 and 393,419.91 is: 589,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,075.20 : 1,683,823.77 = 393,419.91 : x
  2. Step 2: Convert to fraction form
    1,123,075.20/1,683,823.77 = 393,419.91/x
  3. Step 3: Cross multiply
    1,123,075.20x = 1,683,823.77 × 393,419.91
  4. Step 4: Simplify right side
    1,123,075.20x = 662,449,796,049.26
  5. Step 5: Solve for x
    x = 662,449,796,049.26/1,123,075.20
  6. Step 6: Final answer
    x = 589,853.46

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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.