Home / 698,801.20-1,048,201.80-521,654.20

Finding the Fourth Proportional to 698,801.20, 1,048,201.80 and 521,654.20

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Solution

The fourth proportional to 698,801.20, 1,048,201.80 and 521,654.20 is: 782,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,801.20 : 1,048,201.80 = 521,654.20 : x
  2. Step 2: Convert to fraction form
    698,801.20/1,048,201.80 = 521,654.20/x
  3. Step 3: Cross multiply
    698,801.20x = 1,048,201.80 × 521,654.20
  4. Step 4: Simplify right side
    698,801.20x = 546,798,871,417.56
  5. Step 5: Solve for x
    x = 546,798,871,417.56/698,801.20
  6. Step 6: Final answer
    x = 782,481.30

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Double scale
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Similar ratio
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1.5x scale

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.