Home / 1,129,630.84-1,558,500.86-721,971.29

Finding the Fourth Proportional to 1,129,630.84, 1,558,500.86 and 721,971.29

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Solution

The fourth proportional to 1,129,630.84, 1,558,500.86 and 721,971.29 is: 996,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,630.84 : 1,558,500.86 = 721,971.29 : x
  2. Step 2: Convert to fraction form
    1,129,630.84/1,558,500.86 = 721,971.29/x
  3. Step 3: Cross multiply
    1,129,630.84x = 1,558,500.86 × 721,971.29
  4. Step 4: Simplify right side
    1,129,630.84x = 1,125,192,882,061.49
  5. Step 5: Solve for x
    x = 1,125,192,882,061.49/1,129,630.84
  6. Step 6: Final answer
    x = 996,071.32

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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.