Home / 1,211,420.40-1,815,575.40-929,540.40

Finding the Fourth Proportional to 1,211,420.40, 1,815,575.40 and 929,540.40

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Solution

The fourth proportional to 1,211,420.40, 1,815,575.40 and 929,540.40 is: 1,393,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,420.40 : 1,815,575.40 = 929,540.40 : x
  2. Step 2: Convert to fraction form
    1,211,420.40/1,815,575.40 = 929,540.40/x
  3. Step 3: Cross multiply
    1,211,420.40x = 1,815,575.40 × 929,540.40
  4. Step 4: Simplify right side
    1,211,420.40x = 1,687,650,683,546.16
  5. Step 5: Solve for x
    x = 1,687,650,683,546.16/1,211,420.40
  6. Step 6: Final answer
    x = 1,393,117.27

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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.