Home / 805,185-1,111,155.30-465,675.12

Finding the Fourth Proportional to 805,185, 1,111,155.30 and 465,675.12

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Solution

The fourth proportional to 805,185, 1,111,155.30 and 465,675.12 is: 642,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,185 : 1,111,155.30 = 465,675.12 : x
  2. Step 2: Convert to fraction form
    805,185/1,111,155.30 = 465,675.12/x
  3. Step 3: Cross multiply
    805,185x = 1,111,155.30 × 465,675.12
  4. Step 4: Simplify right side
    805,185x = 517,437,377,666.14
  5. Step 5: Solve for x
    x = 517,437,377,666.14/805,185
  6. Step 6: Final answer
    x = 642,631.67

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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.