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Finding the Fourth Proportional to 775,405.44, 1,070,064 and 435,870.72

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Solution

The fourth proportional to 775,405.44, 1,070,064 and 435,870.72 is: 601,504.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,405.44 : 1,070,064 = 435,870.72 : x
  2. Step 2: Convert to fraction form
    775,405.44/1,070,064 = 435,870.72/x
  3. Step 3: Cross multiply
    775,405.44x = 1,070,064 × 435,870.72
  4. Step 4: Simplify right side
    775,405.44x = 466,409,566,126.08
  5. Step 5: Solve for x
    x = 466,409,566,126.08/775,405.44
  6. Step 6: Final answer
    x = 601,504.12

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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.