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Finding the Fourth Proportional to 757,937.75, 1,045,956.12 and 418,406

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Solution

The fourth proportional to 757,937.75, 1,045,956.12 and 418,406 is: 577,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,937.75 : 1,045,956.12 = 418,406 : x
  2. Step 2: Convert to fraction form
    757,937.75/1,045,956.12 = 418,406/x
  3. Step 3: Cross multiply
    757,937.75x = 1,045,956.12 × 418,406
  4. Step 4: Simplify right side
    757,937.75x = 437,634,316,344.72
  5. Step 5: Solve for x
    x = 437,634,316,344.72/757,937.75
  6. Step 6: Final answer
    x = 577,401.40

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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.