Home / 760,428.70-1,049,281.77-420,896.14

Finding the Fourth Proportional to 760,428.70, 1,049,281.77 and 420,896.14

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Solution

The fourth proportional to 760,428.70, 1,049,281.77 and 420,896.14 is: 580,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,428.70 : 1,049,281.77 = 420,896.14 : x
  2. Step 2: Convert to fraction form
    760,428.70/1,049,281.77 = 420,896.14/x
  3. Step 3: Cross multiply
    760,428.70x = 1,049,281.77 × 420,896.14
  4. Step 4: Simplify right side
    760,428.70x = 441,638,646,765.37
  5. Step 5: Solve for x
    x = 441,638,646,765.37/760,428.70
  6. Step 6: Final answer
    x = 580,775.88

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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.