Home / 547,790.20-821,685.30-498,801.40

Finding the Fourth Proportional to 547,790.20, 821,685.30 and 498,801.40

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Solution

The fourth proportional to 547,790.20, 821,685.30 and 498,801.40 is: 748,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,790.20 : 821,685.30 = 498,801.40 : x
  2. Step 2: Convert to fraction form
    547,790.20/821,685.30 = 498,801.40/x
  3. Step 3: Cross multiply
    547,790.20x = 821,685.30 × 498,801.40
  4. Step 4: Simplify right side
    547,790.20x = 409,857,777,999.42
  5. Step 5: Solve for x
    x = 409,857,777,999.42/547,790.20
  6. Step 6: Final answer
    x = 748,202.10

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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.