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Finding the Fourth Proportional to 620,428.80, 930,645.36 and 246,450.72

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Solution

The fourth proportional to 620,428.80, 930,645.36 and 246,450.72 is: 369,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,428.80 : 930,645.36 = 246,450.72 : x
  2. Step 2: Convert to fraction form
    620,428.80/930,645.36 = 246,450.72/x
  3. Step 3: Cross multiply
    620,428.80x = 930,645.36 × 246,450.72
  4. Step 4: Simplify right side
    620,428.80x = 229,358,219,036.66
  5. Step 5: Solve for x
    x = 229,358,219,036.66/620,428.80
  6. Step 6: Final answer
    x = 369,676.94

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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.