Home / 814,063.55-1,221,153.63-215,018.74

Finding the Fourth Proportional to 814,063.55, 1,221,153.63 and 215,018.74

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Solution

The fourth proportional to 814,063.55, 1,221,153.63 and 215,018.74 is: 322,543.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,063.55 : 1,221,153.63 = 215,018.74 : x
  2. Step 2: Convert to fraction form
    814,063.55/1,221,153.63 = 215,018.74/x
  3. Step 3: Cross multiply
    814,063.55x = 1,221,153.63 × 215,018.74
  4. Step 4: Simplify right side
    814,063.55x = 262,570,914,869.03
  5. Step 5: Solve for x
    x = 262,570,914,869.03/814,063.55
  6. Step 6: Final answer
    x = 322,543.51

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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.