Home / 822,021.20-1,233,031.80-290,142.80

Finding the Fourth Proportional to 822,021.20, 1,233,031.80 and 290,142.80

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Solution

The fourth proportional to 822,021.20, 1,233,031.80 and 290,142.80 is: 435,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,021.20 : 1,233,031.80 = 290,142.80 : x
  2. Step 2: Convert to fraction form
    822,021.20/1,233,031.80 = 290,142.80/x
  3. Step 3: Cross multiply
    822,021.20x = 1,233,031.80 × 290,142.80
  4. Step 4: Simplify right side
    822,021.20x = 357,755,298,941.04
  5. Step 5: Solve for x
    x = 357,755,298,941.04/822,021.20
  6. Step 6: Final answer
    x = 435,214.20

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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.