Home / 686,274.40-1,029,411.60-187,688.80

Finding the Fourth Proportional to 686,274.40, 1,029,411.60 and 187,688.80

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Solution

The fourth proportional to 686,274.40, 1,029,411.60 and 187,688.80 is: 281,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,274.40 : 1,029,411.60 = 187,688.80 : x
  2. Step 2: Convert to fraction form
    686,274.40/1,029,411.60 = 187,688.80/x
  3. Step 3: Cross multiply
    686,274.40x = 1,029,411.60 × 187,688.80
  4. Step 4: Simplify right side
    686,274.40x = 193,209,027,910.08
  5. Step 5: Solve for x
    x = 193,209,027,910.08/686,274.40
  6. Step 6: Final answer
    x = 281,533.20

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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.