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Finding the Fourth Proportional to 664,709.76, 917,294.79 and 362,903.76

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Solution

The fourth proportional to 664,709.76, 917,294.79 and 362,903.76 is: 500,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,709.76 : 917,294.79 = 362,903.76 : x
  2. Step 2: Convert to fraction form
    664,709.76/917,294.79 = 362,903.76/x
  3. Step 3: Cross multiply
    664,709.76x = 917,294.79 × 362,903.76
  4. Step 4: Simplify right side
    664,709.76x = 332,889,728,319.41
  5. Step 5: Solve for x
    x = 332,889,728,319.41/664,709.76
  6. Step 6: Final answer
    x = 500,804.63

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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.