Home / 805,379.68-1,111,424.64-442,809.76

Finding the Fourth Proportional to 805,379.68, 1,111,424.64 and 442,809.76

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Solution

The fourth proportional to 805,379.68, 1,111,424.64 and 442,809.76 is: 611,077.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,379.68 : 1,111,424.64 = 442,809.76 : x
  2. Step 2: Convert to fraction form
    805,379.68/1,111,424.64 = 442,809.76/x
  3. Step 3: Cross multiply
    805,379.68x = 1,111,424.64 × 442,809.76
  4. Step 4: Simplify right side
    805,379.68x = 492,149,678,096.49
  5. Step 5: Solve for x
    x = 492,149,678,096.49/805,379.68
  6. Step 6: Final answer
    x = 611,077.84

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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.