Home / 1,129,351.82-1,558,061-645,657.08

Finding the Fourth Proportional to 1,129,351.82, 1,558,061 and 645,657.08

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Solution

The fourth proportional to 1,129,351.82, 1,558,061 and 645,657.08 is: 890,752.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,351.82 : 1,558,061 = 645,657.08 : x
  2. Step 2: Convert to fraction form
    1,129,351.82/1,558,061 = 645,657.08/x
  3. Step 3: Cross multiply
    1,129,351.82x = 1,558,061 × 645,657.08
  4. Step 4: Simplify right side
    1,129,351.82x = 1,005,973,115,721.88
  5. Step 5: Solve for x
    x = 1,005,973,115,721.88/1,129,351.82
  6. Step 6: Final answer
    x = 890,752.64

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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.