Home / 1,285,117.90-1,927,093.65-486,133.90

Finding the Fourth Proportional to 1,285,117.90, 1,927,093.65 and 486,133.90

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Solution

The fourth proportional to 1,285,117.90, 1,927,093.65 and 486,133.90 is: 728,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,117.90 : 1,927,093.65 = 486,133.90 : x
  2. Step 2: Convert to fraction form
    1,285,117.90/1,927,093.65 = 486,133.90/x
  3. Step 3: Cross multiply
    1,285,117.90x = 1,927,093.65 × 486,133.90
  4. Step 4: Simplify right side
    1,285,117.90x = 936,825,551,739.74
  5. Step 5: Solve for x
    x = 936,825,551,739.74/1,285,117.90
  6. Step 6: Final answer
    x = 728,980.24

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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.