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Finding the Fourth Proportional to 611,404.42, 916,252.35 and 520,974.94

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Solution

The fourth proportional to 611,404.42, 916,252.35 and 520,974.94 is: 780,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,404.42 : 916,252.35 = 520,974.94 : x
  2. Step 2: Convert to fraction form
    611,404.42/916,252.35 = 520,974.94/x
  3. Step 3: Cross multiply
    611,404.42x = 916,252.35 × 520,974.94
  4. Step 4: Simplify right side
    611,404.42x = 477,344,513,066.11
  5. Step 5: Solve for x
    x = 477,344,513,066.11/611,404.42
  6. Step 6: Final answer
    x = 780,734.48

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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.