Home / 620,440.16-930,623.28-221,059.76

Finding the Fourth Proportional to 620,440.16, 930,623.28 and 221,059.76

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Solution

The fourth proportional to 620,440.16, 930,623.28 and 221,059.76 is: 331,576.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,440.16 : 930,623.28 = 221,059.76 : x
  2. Step 2: Convert to fraction form
    620,440.16/930,623.28 = 221,059.76/x
  3. Step 3: Cross multiply
    620,440.16x = 930,623.28 × 221,059.76
  4. Step 4: Simplify right side
    620,440.16x = 205,723,358,927.21
  5. Step 5: Solve for x
    x = 205,723,358,927.21/620,440.16
  6. Step 6: Final answer
    x = 331,576.47

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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.