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Finding the Fourth Proportional to 570,282.12, 787,185.95 and 328,661.15

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Solution

The fourth proportional to 570,282.12, 787,185.95 and 328,661.15 is: 453,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,282.12 : 787,185.95 = 328,661.15 : x
  2. Step 2: Convert to fraction form
    570,282.12/787,185.95 = 328,661.15/x
  3. Step 3: Cross multiply
    570,282.12x = 787,185.95 × 328,661.15
  4. Step 4: Simplify right side
    570,282.12x = 258,717,434,011.61
  5. Step 5: Solve for x
    x = 258,717,434,011.61/570,282.12
  6. Step 6: Final answer
    x = 453,665.69

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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.