Home / 693,495.20-1,040,242.80-409,642.40

Finding the Fourth Proportional to 693,495.20, 1,040,242.80 and 409,642.40

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Solution

The fourth proportional to 693,495.20, 1,040,242.80 and 409,642.40 is: 614,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,495.20 : 1,040,242.80 = 409,642.40 : x
  2. Step 2: Convert to fraction form
    693,495.20/1,040,242.80 = 409,642.40/x
  3. Step 3: Cross multiply
    693,495.20x = 1,040,242.80 × 409,642.40
  4. Step 4: Simplify right side
    693,495.20x = 426,127,557,174.72
  5. Step 5: Solve for x
    x = 426,127,557,174.72/693,495.20
  6. Step 6: Final answer
    x = 614,463.60

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Similar ratio
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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.