Home / 1,036.32-1,554.55-420.03

Finding the Fourth Proportional to 1,036.32, 1,554.55 and 420.03

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Solution

The fourth proportional to 1,036.32, 1,554.55 and 420.03 is: 630.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.32 : 1,554.55 = 420.03 : x
  2. Step 2: Convert to fraction form
    1,036.32/1,554.55 = 420.03/x
  3. Step 3: Cross multiply
    1,036.32x = 1,554.55 × 420.03
  4. Step 4: Simplify right side
    1,036.32x = 652,957.64
  5. Step 5: Solve for x
    x = 652,957.64/1,036.32
  6. Step 6: Final answer
    x = 630.07

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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.