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Finding the Fourth Proportional to 438,234.84, 600,378.90 and 421,847.20

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Solution

The fourth proportional to 438,234.84, 600,378.90 and 421,847.20 is: 577,927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,234.84 : 600,378.90 = 421,847.20 : x
  2. Step 2: Convert to fraction form
    438,234.84/600,378.90 = 421,847.20/x
  3. Step 3: Cross multiply
    438,234.84x = 600,378.90 × 421,847.20
  4. Step 4: Simplify right side
    438,234.84x = 253,268,153,695.50
  5. Step 5: Solve for x
    x = 253,268,153,695.50/438,234.84
  6. Step 6: Final answer
    x = 577,927.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.