Home / 821,274.27-1,231,101.77-288,421.65

Finding the Fourth Proportional to 821,274.27, 1,231,101.77 and 288,421.65

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Solution

The fourth proportional to 821,274.27, 1,231,101.77 and 288,421.65 is: 432,348.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,274.27 : 1,231,101.77 = 288,421.65 : x
  2. Step 2: Convert to fraction form
    821,274.27/1,231,101.77 = 288,421.65/x
  3. Step 3: Cross multiply
    821,274.27x = 1,231,101.77 × 288,421.65
  4. Step 4: Simplify right side
    821,274.27x = 355,076,402,379.21
  5. Step 5: Solve for x
    x = 355,076,402,379.21/821,274.27
  6. Step 6: Final answer
    x = 432,348.14

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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.