Home / 1,290,558.72-1,781,012.16-717,623.04

Finding the Fourth Proportional to 1,290,558.72, 1,781,012.16 and 717,623.04

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Solution

The fourth proportional to 1,290,558.72, 1,781,012.16 and 717,623.04 is: 990,342.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,558.72 : 1,781,012.16 = 717,623.04 : x
  2. Step 2: Convert to fraction form
    1,290,558.72/1,781,012.16 = 717,623.04/x
  3. Step 3: Cross multiply
    1,290,558.72x = 1,781,012.16 × 717,623.04
  4. Step 4: Simplify right side
    1,290,558.72x = 1,278,095,360,536.17
  5. Step 5: Solve for x
    x = 1,278,095,360,536.17/1,290,558.72
  6. Step 6: Final answer
    x = 990,342.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.