Home / 1,021,082.60-1,409,070.63-639,319.88

Finding the Fourth Proportional to 1,021,082.60, 1,409,070.63 and 639,319.88

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Solution

The fourth proportional to 1,021,082.60, 1,409,070.63 and 639,319.88 is: 882,246.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,082.60 : 1,409,070.63 = 639,319.88 : x
  2. Step 2: Convert to fraction form
    1,021,082.60/1,409,070.63 = 639,319.88/x
  3. Step 3: Cross multiply
    1,021,082.60x = 1,409,070.63 × 639,319.88
  4. Step 4: Simplify right side
    1,021,082.60x = 900,846,866,083.12
  5. Step 5: Solve for x
    x = 900,846,866,083.12/1,021,082.60
  6. Step 6: Final answer
    x = 882,246.81

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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.