Home / 813,031.69-1,121,969.18-450,448.27

Finding the Fourth Proportional to 813,031.69, 1,121,969.18 and 450,448.27

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Solution

The fourth proportional to 813,031.69, 1,121,969.18 and 450,448.27 is: 621,610.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,031.69 : 1,121,969.18 = 450,448.27 : x
  2. Step 2: Convert to fraction form
    813,031.69/1,121,969.18 = 450,448.27/x
  3. Step 3: Cross multiply
    813,031.69x = 1,121,969.18 × 450,448.27
  4. Step 4: Simplify right side
    813,031.69x = 505,389,076,124.32
  5. Step 5: Solve for x
    x = 505,389,076,124.32/813,031.69
  6. Step 6: Final answer
    x = 621,610.55

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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.