Home / 1,260,587.79-1,890,898.08-419,139.54

Finding the Fourth Proportional to 1,260,587.79, 1,890,898.08 and 419,139.54

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Solution

The fourth proportional to 1,260,587.79, 1,890,898.08 and 419,139.54 is: 628,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,587.79 : 1,890,898.08 = 419,139.54 : x
  2. Step 2: Convert to fraction form
    1,260,587.79/1,890,898.08 = 419,139.54/x
  3. Step 3: Cross multiply
    1,260,587.79x = 1,890,898.08 × 419,139.54
  4. Step 4: Simplify right side
    1,260,587.79x = 792,550,151,438.08
  5. Step 5: Solve for x
    x = 792,550,151,438.08/1,260,587.79
  6. Step 6: Final answer
    x = 628,714.76

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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.