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Finding the Fourth Proportional to 611,403.42, 916,250.85 and 520,973.94

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Solution

The fourth proportional to 611,403.42, 916,250.85 and 520,973.94 is: 780,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,403.42 : 916,250.85 = 520,973.94 : x
  2. Step 2: Convert to fraction form
    611,403.42/916,250.85 = 520,973.94/x
  3. Step 3: Cross multiply
    611,403.42x = 916,250.85 × 520,973.94
  4. Step 4: Simplify right side
    611,403.42x = 477,342,815,352.85
  5. Step 5: Solve for x
    x = 477,342,815,352.85/611,403.42
  6. Step 6: Final answer
    x = 780,732.98

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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.