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Finding the Fourth Proportional to 570,665.96, 856,313.98 and 318,088.62

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Solution

The fourth proportional to 570,665.96, 856,313.98 and 318,088.62 is: 477,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,665.96 : 856,313.98 = 318,088.62 : x
  2. Step 2: Convert to fraction form
    570,665.96/856,313.98 = 318,088.62/x
  3. Step 3: Cross multiply
    570,665.96x = 856,313.98 × 318,088.62
  4. Step 4: Simplify right side
    570,665.96x = 272,383,731,389.69
  5. Step 5: Solve for x
    x = 272,383,731,389.69/570,665.96
  6. Step 6: Final answer
    x = 477,308.53

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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.