Home / 763,619.40-1,145,429.10-443,442.60

Finding the Fourth Proportional to 763,619.40, 1,145,429.10 and 443,442.60

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Solution

The fourth proportional to 763,619.40, 1,145,429.10 and 443,442.60 is: 665,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,619.40 : 1,145,429.10 = 443,442.60 : x
  2. Step 2: Convert to fraction form
    763,619.40/1,145,429.10 = 443,442.60/x
  3. Step 3: Cross multiply
    763,619.40x = 1,145,429.10 × 443,442.60
  4. Step 4: Simplify right side
    763,619.40x = 507,932,058,219.66
  5. Step 5: Solve for x
    x = 507,932,058,219.66/763,619.40
  6. Step 6: Final answer
    x = 665,163.90

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1.5x scale

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.