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Finding the Fourth Proportional to 570,388.81, 856,424.30 and 318,162.10

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Solution

The fourth proportional to 570,388.81, 856,424.30 and 318,162.10 is: 477,712.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,388.81 : 856,424.30 = 318,162.10 : x
  2. Step 2: Convert to fraction form
    570,388.81/856,424.30 = 318,162.10/x
  3. Step 3: Cross multiply
    570,388.81x = 856,424.30 × 318,162.10
  4. Step 4: Simplify right side
    570,388.81x = 272,481,753,779.03
  5. Step 5: Solve for x
    x = 272,481,753,779.03/570,388.81
  6. Step 6: Final answer
    x = 477,712.31

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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.