Home / 693,428.40-1,040,142.60-587,140.20

Finding the Fourth Proportional to 693,428.40, 1,040,142.60 and 587,140.20

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Solution

The fourth proportional to 693,428.40, 1,040,142.60 and 587,140.20 is: 880,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,428.40 : 1,040,142.60 = 587,140.20 : x
  2. Step 2: Convert to fraction form
    693,428.40/1,040,142.60 = 587,140.20/x
  3. Step 3: Cross multiply
    693,428.40x = 1,040,142.60 × 587,140.20
  4. Step 4: Simplify right side
    693,428.40x = 610,709,534,192.52
  5. Step 5: Solve for x
    x = 610,709,534,192.52/693,428.40
  6. Step 6: Final answer
    x = 880,710.30

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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.