Home / 686,640.80-1,029,961.20-474,064.40

Finding the Fourth Proportional to 686,640.80, 1,029,961.20 and 474,064.40

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Solution

The fourth proportional to 686,640.80, 1,029,961.20 and 474,064.40 is: 711,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,640.80 : 1,029,961.20 = 474,064.40 : x
  2. Step 2: Convert to fraction form
    686,640.80/1,029,961.20 = 474,064.40/x
  3. Step 3: Cross multiply
    686,640.80x = 1,029,961.20 × 474,064.40
  4. Step 4: Simplify right side
    686,640.80x = 488,267,938,301.28
  5. Step 5: Solve for x
    x = 488,267,938,301.28/686,640.80
  6. Step 6: Final answer
    x = 711,096.60

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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.