Home / 745,855.76-1,029,355.20-455,451.28

Finding the Fourth Proportional to 745,855.76, 1,029,355.20 and 455,451.28

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Solution

The fourth proportional to 745,855.76, 1,029,355.20 and 455,451.28 is: 628,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,855.76 : 1,029,355.20 = 455,451.28 : x
  2. Step 2: Convert to fraction form
    745,855.76/1,029,355.20 = 455,451.28/x
  3. Step 3: Cross multiply
    745,855.76x = 1,029,355.20 × 455,451.28
  4. Step 4: Simplify right side
    745,855.76x = 468,821,143,414.66
  5. Step 5: Solve for x
    x = 468,821,143,414.66/745,855.76
  6. Step 6: Final answer
    x = 628,568.11

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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.