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Finding the Fourth Proportional to 628,032.45, 866,879.91 and 499,199.52

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Solution

The fourth proportional to 628,032.45, 866,879.91 and 499,199.52 is: 689,050.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,032.45 : 866,879.91 = 499,199.52 : x
  2. Step 2: Convert to fraction form
    628,032.45/866,879.91 = 499,199.52/x
  3. Step 3: Cross multiply
    628,032.45x = 866,879.91 × 499,199.52
  4. Step 4: Simplify right side
    628,032.45x = 432,746,034,969.64
  5. Step 5: Solve for x
    x = 432,746,034,969.64/628,032.45
  6. Step 6: Final answer
    x = 689,050.44

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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.