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Finding the Fourth Proportional to 570,291.80, 787,039.22 and 328,569.98

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Solution

The fourth proportional to 570,291.80, 787,039.22 and 328,569.98 is: 453,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,291.80 : 787,039.22 = 328,569.98 : x
  2. Step 2: Convert to fraction form
    570,291.80/787,039.22 = 328,569.98/x
  3. Step 3: Cross multiply
    570,291.80x = 787,039.22 × 328,569.98
  4. Step 4: Simplify right side
    570,291.80x = 258,597,459,131.77
  5. Step 5: Solve for x
    x = 258,597,459,131.77/570,291.80
  6. Step 6: Final answer
    x = 453,447.62

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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.