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Finding the Fourth Proportional to 666,744.21, 999,230.58 and 382,570.90

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Solution

The fourth proportional to 666,744.21, 999,230.58 and 382,570.90 is: 573,348.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,744.21 : 999,230.58 = 382,570.90 : x
  2. Step 2: Convert to fraction form
    666,744.21/999,230.58 = 382,570.90/x
  3. Step 3: Cross multiply
    666,744.21x = 999,230.58 × 382,570.90
  4. Step 4: Simplify right side
    666,744.21x = 382,276,539,800.05
  5. Step 5: Solve for x
    x = 382,276,539,800.05/666,744.21
  6. Step 6: Final answer
    x = 573,348.12

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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.