Home / 728,341.85-1,004,699.60-455,936.65

Finding the Fourth Proportional to 728,341.85, 1,004,699.60 and 455,936.65

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Solution

The fourth proportional to 728,341.85, 1,004,699.60 and 455,936.65 is: 628,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,341.85 : 1,004,699.60 = 455,936.65 : x
  2. Step 2: Convert to fraction form
    728,341.85/1,004,699.60 = 455,936.65/x
  3. Step 3: Cross multiply
    728,341.85x = 1,004,699.60 × 455,936.65
  4. Step 4: Simplify right side
    728,341.85x = 458,079,366,798.67
  5. Step 5: Solve for x
    x = 458,079,366,798.67/728,341.85
  6. Step 6: Final answer
    x = 628,934.57

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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.