Home / 811,831.31-1,120,299.63-449,270.45

Finding the Fourth Proportional to 811,831.31, 1,120,299.63 and 449,270.45

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Solution

The fourth proportional to 811,831.31, 1,120,299.63 and 449,270.45 is: 619,977.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,831.31 : 1,120,299.63 = 449,270.45 : x
  2. Step 2: Convert to fraction form
    811,831.31/1,120,299.63 = 449,270.45/x
  3. Step 3: Cross multiply
    811,831.31x = 1,120,299.63 × 449,270.45
  4. Step 4: Simplify right side
    811,831.31x = 503,317,513,303.44
  5. Step 5: Solve for x
    x = 503,317,513,303.44/811,831.31
  6. Step 6: Final answer
    x = 619,977.96

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1.5x scale

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.