Home / 771,329.52-1,064,720.44-465,418.80

Finding the Fourth Proportional to 771,329.52, 1,064,720.44 and 465,418.80

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Solution

The fourth proportional to 771,329.52, 1,064,720.44 and 465,418.80 is: 642,450.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,329.52 : 1,064,720.44 = 465,418.80 : x
  2. Step 2: Convert to fraction form
    771,329.52/1,064,720.44 = 465,418.80/x
  3. Step 3: Cross multiply
    771,329.52x = 1,064,720.44 × 465,418.80
  4. Step 4: Simplify right side
    771,329.52x = 495,540,909,520.27
  5. Step 5: Solve for x
    x = 495,540,909,520.27/771,329.52
  6. Step 6: Final answer
    x = 642,450.34

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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.