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Finding the Fourth Proportional to 570,376.69, 856,406.12 and 318,149.98

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Solution

The fourth proportional to 570,376.69, 856,406.12 and 318,149.98 is: 477,694.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,376.69 : 856,406.12 = 318,149.98 : x
  2. Step 2: Convert to fraction form
    570,376.69/856,406.12 = 318,149.98/x
  3. Step 3: Cross multiply
    570,376.69x = 856,406.12 × 318,149.98
  4. Step 4: Simplify right side
    570,376.69x = 272,465,586,218.11
  5. Step 5: Solve for x
    x = 272,465,586,218.11/570,376.69
  6. Step 6: Final answer
    x = 477,694.11

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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.