Home / 809,989.96-1,117,847.28-465,931.12

Finding the Fourth Proportional to 809,989.96, 1,117,847.28 and 465,931.12

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Solution

The fourth proportional to 809,989.96, 1,117,847.28 and 465,931.12 is: 643,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,989.96 : 1,117,847.28 = 465,931.12 : x
  2. Step 2: Convert to fraction form
    809,989.96/1,117,847.28 = 465,931.12/x
  3. Step 3: Cross multiply
    809,989.96x = 1,117,847.28 × 465,931.12
  4. Step 4: Simplify right side
    809,989.96x = 520,839,835,159.35
  5. Step 5: Solve for x
    x = 520,839,835,159.35/809,989.96
  6. Step 6: Final answer
    x = 643,020.11

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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.