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Finding the Fourth Proportional to 570,904.40, 856,356.60 and 171,606.80

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Solution

The fourth proportional to 570,904.40, 856,356.60 and 171,606.80 is: 257,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,904.40 : 856,356.60 = 171,606.80 : x
  2. Step 2: Convert to fraction form
    570,904.40/856,356.60 = 171,606.80/x
  3. Step 3: Cross multiply
    570,904.40x = 856,356.60 × 171,606.80
  4. Step 4: Simplify right side
    570,904.40x = 146,956,615,784.88
  5. Step 5: Solve for x
    x = 146,956,615,784.88/570,904.40
  6. Step 6: Final answer
    x = 257,410.20

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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.