Home / 685,277.80-1,025,948.40-419,557.30

Finding the Fourth Proportional to 685,277.80, 1,025,948.40 and 419,557.30

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Solution

The fourth proportional to 685,277.80, 1,025,948.40 and 419,557.30 is: 628,130.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,277.80 : 1,025,948.40 = 419,557.30 : x
  2. Step 2: Convert to fraction form
    685,277.80/1,025,948.40 = 419,557.30/x
  3. Step 3: Cross multiply
    685,277.80x = 1,025,948.40 × 419,557.30
  4. Step 4: Simplify right side
    685,277.80x = 430,444,140,643.32
  5. Step 5: Solve for x
    x = 430,444,140,643.32/685,277.80
  6. Step 6: Final answer
    x = 628,130.87

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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.