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Finding the Fourth Proportional to 570,290.12, 787,197 and 328,669.16

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Solution

The fourth proportional to 570,290.12, 787,197 and 328,669.16 is: 453,676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,290.12 : 787,197 = 328,669.16 : x
  2. Step 2: Convert to fraction form
    570,290.12/787,197 = 328,669.16/x
  3. Step 3: Cross multiply
    570,290.12x = 787,197 × 328,669.16
  4. Step 4: Simplify right side
    570,290.12x = 258,727,376,744.52
  5. Step 5: Solve for x
    x = 258,727,376,744.52/570,290.12
  6. Step 6: Final answer
    x = 453,676.76

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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.