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Finding the Fourth Proportional to 570,389.25, 856,424.95 and 318,162.54

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Solution

The fourth proportional to 570,389.25, 856,424.95 and 318,162.54 is: 477,712.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,389.25 : 856,424.95 = 318,162.54 : x
  2. Step 2: Convert to fraction form
    570,389.25/856,424.95 = 318,162.54/x
  3. Step 3: Cross multiply
    570,389.25x = 856,424.95 × 318,162.54
  4. Step 4: Simplify right side
    570,389.25x = 272,482,336,615.97
  5. Step 5: Solve for x
    x = 272,482,336,615.97/570,389.25
  6. Step 6: Final answer
    x = 477,712.96

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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.