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Finding the Fourth Proportional to 570,738.47, 856,238.90 and 171,386.79

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Solution

The fourth proportional to 570,738.47, 856,238.90 and 171,386.79 is: 257,119.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,738.47 : 856,238.90 = 171,386.79 : x
  2. Step 2: Convert to fraction form
    570,738.47/856,238.90 = 171,386.79/x
  3. Step 3: Cross multiply
    570,738.47x = 856,238.90 × 171,386.79
  4. Step 4: Simplify right side
    570,738.47x = 146,748,035,687.20
  5. Step 5: Solve for x
    x = 146,748,035,687.20/570,738.47
  6. Step 6: Final answer
    x = 257,119.58

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1.5x scale

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.