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Finding the Fourth Proportional to 667,814.40, 921,582.12 and 361,899.24

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Solution

The fourth proportional to 667,814.40, 921,582.12 and 361,899.24 is: 499,420.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,814.40 : 921,582.12 = 361,899.24 : x
  2. Step 2: Convert to fraction form
    667,814.40/921,582.12 = 361,899.24/x
  3. Step 3: Cross multiply
    667,814.40x = 921,582.12 × 361,899.24
  4. Step 4: Simplify right side
    667,814.40x = 333,519,868,825.59
  5. Step 5: Solve for x
    x = 333,519,868,825.59/667,814.40
  6. Step 6: Final answer
    x = 499,420.00

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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.