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Finding the Fourth Proportional to 768,381.84, 1,060,366.32 and 424,218.24

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Solution

The fourth proportional to 768,381.84, 1,060,366.32 and 424,218.24 is: 585,420.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,381.84 : 1,060,366.32 = 424,218.24 : x
  2. Step 2: Convert to fraction form
    768,381.84/1,060,366.32 = 424,218.24/x
  3. Step 3: Cross multiply
    768,381.84x = 1,060,366.32 × 424,218.24
  4. Step 4: Simplify right side
    768,381.84x = 449,826,734,025.68
  5. Step 5: Solve for x
    x = 449,826,734,025.68/768,381.84
  6. Step 6: Final answer
    x = 585,420.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.