Home / 1,260,281.20-1,890,421.80-1,185,631.60

Finding the Fourth Proportional to 1,260,281.20, 1,890,421.80 and 1,185,631.60

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Solution

The fourth proportional to 1,260,281.20, 1,890,421.80 and 1,185,631.60 is: 1,778,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,281.20 : 1,890,421.80 = 1,185,631.60 : x
  2. Step 2: Convert to fraction form
    1,260,281.20/1,890,421.80 = 1,185,631.60/x
  3. Step 3: Cross multiply
    1,260,281.20x = 1,890,421.80 × 1,185,631.60
  4. Step 4: Simplify right side
    1,260,281.20x = 2,241,343,823,408.88
  5. Step 5: Solve for x
    x = 2,241,343,823,408.88/1,260,281.20
  6. Step 6: Final answer
    x = 1,778,447.40

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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.