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Finding the Fourth Proportional to 678,825.84, 936,763.32 and 377,020.08

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Solution

The fourth proportional to 678,825.84, 936,763.32 and 377,020.08 is: 520,278.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,825.84 : 936,763.32 = 377,020.08 : x
  2. Step 2: Convert to fraction form
    678,825.84/936,763.32 = 377,020.08/x
  3. Step 3: Cross multiply
    678,825.84x = 936,763.32 × 377,020.08
  4. Step 4: Simplify right side
    678,825.84x = 353,178,581,847.47
  5. Step 5: Solve for x
    x = 353,178,581,847.47/678,825.84
  6. Step 6: Final answer
    x = 520,278.64

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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.