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Finding the Fourth Proportional to 397,990.30, 596,596.65 and 355,999.90

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Solution

The fourth proportional to 397,990.30, 596,596.65 and 355,999.90 is: 533,652.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,990.30 : 596,596.65 = 355,999.90 : x
  2. Step 2: Convert to fraction form
    397,990.30/596,596.65 = 355,999.90/x
  3. Step 3: Cross multiply
    397,990.30x = 596,596.65 × 355,999.90
  4. Step 4: Simplify right side
    397,990.30x = 212,388,347,740.34
  5. Step 5: Solve for x
    x = 212,388,347,740.34/397,990.30
  6. Step 6: Final answer
    x = 533,652.07

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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.