Home / 772,692.61-1,066,379.63-428,639.46

Finding the Fourth Proportional to 772,692.61, 1,066,379.63 and 428,639.46

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Solution

The fourth proportional to 772,692.61, 1,066,379.63 and 428,639.46 is: 591,557.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,692.61 : 1,066,379.63 = 428,639.46 : x
  2. Step 2: Convert to fraction form
    772,692.61/1,066,379.63 = 428,639.46/x
  3. Step 3: Cross multiply
    772,692.61x = 1,066,379.63 × 428,639.46
  4. Step 4: Simplify right side
    772,692.61x = 457,092,388,758.20
  5. Step 5: Solve for x
    x = 457,092,388,758.20/772,692.61
  6. Step 6: Final answer
    x = 591,557.86

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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.