Home / 990,103.86-1,484,917.92-457,113.06

Finding the Fourth Proportional to 990,103.86, 1,484,917.92 and 457,113.06

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Solution

The fourth proportional to 990,103.86, 1,484,917.92 and 457,113.06 is: 685,559.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,103.86 : 1,484,917.92 = 457,113.06 : x
  2. Step 2: Convert to fraction form
    990,103.86/1,484,917.92 = 457,113.06/x
  3. Step 3: Cross multiply
    990,103.86x = 1,484,917.92 × 457,113.06
  4. Step 4: Simplify right side
    990,103.86x = 678,775,374,260.04
  5. Step 5: Solve for x
    x = 678,775,374,260.04/990,103.86
  6. Step 6: Final answer
    x = 685,559.77

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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.