Home / 812,639.20-1,121,492.64-450,044.32

Finding the Fourth Proportional to 812,639.20, 1,121,492.64 and 450,044.32

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Solution

The fourth proportional to 812,639.20, 1,121,492.64 and 450,044.32 is: 621,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,639.20 : 1,121,492.64 = 450,044.32 : x
  2. Step 2: Convert to fraction form
    812,639.20/1,121,492.64 = 450,044.32/x
  3. Step 3: Cross multiply
    812,639.20x = 1,121,492.64 × 450,044.32
  4. Step 4: Simplify right side
    812,639.20x = 504,721,392,553.81
  5. Step 5: Solve for x
    x = 504,721,392,553.81/812,639.20
  6. Step 6: Final answer
    x = 621,089.15

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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.