Home / 759,866.81-1,048,649.11-420,335.06

Finding the Fourth Proportional to 759,866.81, 1,048,649.11 and 420,335.06

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Solution

The fourth proportional to 759,866.81, 1,048,649.11 and 420,335.06 is: 580,080.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,866.81 : 1,048,649.11 = 420,335.06 : x
  2. Step 2: Convert to fraction form
    759,866.81/1,048,649.11 = 420,335.06/x
  3. Step 3: Cross multiply
    759,866.81x = 1,048,649.11 × 420,335.06
  4. Step 4: Simplify right side
    759,866.81x = 440,783,988,141.58
  5. Step 5: Solve for x
    x = 440,783,988,141.58/759,866.81
  6. Step 6: Final answer
    x = 580,080.59

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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.