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Finding the Fourth Proportional to 665,847.95, 918,870.28 and 359,923.50

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Solution

The fourth proportional to 665,847.95, 918,870.28 and 359,923.50 is: 496,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,847.95 : 918,870.28 = 359,923.50 : x
  2. Step 2: Convert to fraction form
    665,847.95/918,870.28 = 359,923.50/x
  3. Step 3: Cross multiply
    665,847.95x = 918,870.28 × 359,923.50
  4. Step 4: Simplify right side
    665,847.95x = 330,723,006,323.77
  5. Step 5: Solve for x
    x = 330,723,006,323.77/665,847.95
  6. Step 6: Final answer
    x = 496,694.49

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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.