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Finding the Fourth Proportional to 805,574.16, 1,111,668.84 and 442,997.64

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Solution

The fourth proportional to 805,574.16, 1,111,668.84 and 442,997.64 is: 611,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,574.16 : 1,111,668.84 = 442,997.64 : x
  2. Step 2: Convert to fraction form
    805,574.16/1,111,668.84 = 442,997.64/x
  3. Step 3: Cross multiply
    805,574.16x = 1,111,668.84 × 442,997.64
  4. Step 4: Simplify right side
    805,574.16x = 492,466,672,581.54
  5. Step 5: Solve for x
    x = 492,466,672,581.54/805,574.16
  6. Step 6: Final answer
    x = 611,323.82

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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.