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Finding the Fourth Proportional to 631,456.92, 871,410.24 and 359,510.76

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Solution

The fourth proportional to 631,456.92, 871,410.24 and 359,510.76 is: 496,124.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,456.92 : 871,410.24 = 359,510.76 : x
  2. Step 2: Convert to fraction form
    631,456.92/871,410.24 = 359,510.76/x
  3. Step 3: Cross multiply
    631,456.92x = 871,410.24 × 359,510.76
  4. Step 4: Simplify right side
    631,456.92x = 313,281,357,654.18
  5. Step 5: Solve for x
    x = 313,281,357,654.18/631,456.92
  6. Step 6: Final answer
    x = 496,124.67

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.