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Finding the Fourth Proportional to 524,780.40, 788,045.40 and 288,292.80

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Solution

The fourth proportional to 524,780.40, 788,045.40 and 288,292.80 is: 432,919.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,780.40 : 788,045.40 = 288,292.80 : x
  2. Step 2: Convert to fraction form
    524,780.40/788,045.40 = 288,292.80/x
  3. Step 3: Cross multiply
    524,780.40x = 788,045.40 × 288,292.80
  4. Step 4: Simplify right side
    524,780.40x = 227,187,814,893.12
  5. Step 5: Solve for x
    x = 227,187,814,893.12/524,780.40
  6. Step 6: Final answer
    x = 432,919.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.