Home / 828,105.96-1,142,706.78-465,446.28

Finding the Fourth Proportional to 828,105.96, 1,142,706.78 and 465,446.28

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Solution

The fourth proportional to 828,105.96, 1,142,706.78 and 465,446.28 is: 642,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,105.96 : 1,142,706.78 = 465,446.28 : x
  2. Step 2: Convert to fraction form
    828,105.96/1,142,706.78 = 465,446.28/x
  3. Step 3: Cross multiply
    828,105.96x = 1,142,706.78 × 465,446.28
  4. Step 4: Simplify right side
    828,105.96x = 531,868,619,881.78
  5. Step 5: Solve for x
    x = 531,868,619,881.78/828,105.96
  6. Step 6: Final answer
    x = 642,271.21

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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.