Home / 728,819.40-1,005,599.64-442,332.84

Finding the Fourth Proportional to 728,819.40, 1,005,599.64 and 442,332.84

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Solution

The fourth proportional to 728,819.40, 1,005,599.64 and 442,332.84 is: 610,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,819.40 : 1,005,599.64 = 442,332.84 : x
  2. Step 2: Convert to fraction form
    728,819.40/1,005,599.64 = 442,332.84/x
  3. Step 3: Cross multiply
    728,819.40x = 1,005,599.64 × 442,332.84
  4. Step 4: Simplify right side
    728,819.40x = 444,809,744,664.18
  5. Step 5: Solve for x
    x = 444,809,744,664.18/728,819.40
  6. Step 6: Final answer
    x = 610,315.46

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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.