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Finding the Fourth Proportional to 719,853.84, 1,079,820 and 187,376.40

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Solution

The fourth proportional to 719,853.84, 1,079,820 and 187,376.40 is: 281,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,853.84 : 1,079,820 = 187,376.40 : x
  2. Step 2: Convert to fraction form
    719,853.84/1,079,820 = 187,376.40/x
  3. Step 3: Cross multiply
    719,853.84x = 1,079,820 × 187,376.40
  4. Step 4: Simplify right side
    719,853.84x = 202,332,784,248
  5. Step 5: Solve for x
    x = 202,332,784,248/719,853.84
  6. Step 6: Final answer
    x = 281,074.81

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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.