Home / 805,424.20-1,111,488.30-442,870.92

Finding the Fourth Proportional to 805,424.20, 1,111,488.30 and 442,870.92

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Solution

The fourth proportional to 805,424.20, 1,111,488.30 and 442,870.92 is: 611,163.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,424.20 : 1,111,488.30 = 442,870.92 : x
  2. Step 2: Convert to fraction form
    805,424.20/1,111,488.30 = 442,870.92/x
  3. Step 3: Cross multiply
    805,424.20x = 1,111,488.30 × 442,870.92
  4. Step 4: Simplify right side
    805,424.20x = 492,245,845,990.24
  5. Step 5: Solve for x
    x = 492,245,845,990.24/805,424.20
  6. Step 6: Final answer
    x = 611,163.47

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1.5x scale

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.