Home / 642,178.80-886,221.12-366,531.16

Finding the Fourth Proportional to 642,178.80, 886,221.12 and 366,531.16

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Solution

The fourth proportional to 642,178.80, 886,221.12 and 366,531.16 is: 505,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,178.80 : 886,221.12 = 366,531.16 : x
  2. Step 2: Convert to fraction form
    642,178.80/886,221.12 = 366,531.16/x
  3. Step 3: Cross multiply
    642,178.80x = 886,221.12 × 366,531.16
  4. Step 4: Simplify right side
    642,178.80x = 324,827,655,130.10
  5. Step 5: Solve for x
    x = 324,827,655,130.10/642,178.80
  6. Step 6: Final answer
    x = 505,821.21

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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.