Home / 1,129,821.85-1,558,774.63-639,724.57

Finding the Fourth Proportional to 1,129,821.85, 1,558,774.63 and 639,724.57

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Solution

The fourth proportional to 1,129,821.85, 1,558,774.63 and 639,724.57 is: 882,605.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,821.85 : 1,558,774.63 = 639,724.57 : x
  2. Step 2: Convert to fraction form
    1,129,821.85/1,558,774.63 = 639,724.57/x
  3. Step 3: Cross multiply
    1,129,821.85x = 1,558,774.63 × 639,724.57
  4. Step 4: Simplify right side
    1,129,821.85x = 997,186,426,806.38
  5. Step 5: Solve for x
    x = 997,186,426,806.38/1,129,821.85
  6. Step 6: Final answer
    x = 882,605.01

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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.