Home / 821,981.70-1,232,972.55-290,103.30

Finding the Fourth Proportional to 821,981.70, 1,232,972.55 and 290,103.30

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Solution

The fourth proportional to 821,981.70, 1,232,972.55 and 290,103.30 is: 435,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,981.70 : 1,232,972.55 = 290,103.30 : x
  2. Step 2: Convert to fraction form
    821,981.70/1,232,972.55 = 290,103.30/x
  3. Step 3: Cross multiply
    821,981.70x = 1,232,972.55 × 290,103.30
  4. Step 4: Simplify right side
    821,981.70x = 357,689,405,564.42
  5. Step 5: Solve for x
    x = 357,689,405,564.42/821,981.70
  6. Step 6: Final answer
    x = 435,154.95

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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.