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Finding the Fourth Proportional to 493,321.80, 739,982.70 and 358,821.30

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Solution

The fourth proportional to 493,321.80, 739,982.70 and 358,821.30 is: 538,231.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,321.80 : 739,982.70 = 358,821.30 : x
  2. Step 2: Convert to fraction form
    493,321.80/739,982.70 = 358,821.30/x
  3. Step 3: Cross multiply
    493,321.80x = 739,982.70 × 358,821.30
  4. Step 4: Simplify right side
    493,321.80x = 265,521,554,391.51
  5. Step 5: Solve for x
    x = 265,521,554,391.51/493,321.80
  6. Step 6: Final answer
    x = 538,231.95

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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.