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Finding the Fourth Proportional to 787,897.94, 1,182,216 and 388,320.89

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Solution

The fourth proportional to 787,897.94, 1,182,216 and 388,320.89 is: 582,663.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,897.94 : 1,182,216 = 388,320.89 : x
  2. Step 2: Convert to fraction form
    787,897.94/1,182,216 = 388,320.89/x
  3. Step 3: Cross multiply
    787,897.94x = 1,182,216 × 388,320.89
  4. Step 4: Simplify right side
    787,897.94x = 459,079,169,292.24
  5. Step 5: Solve for x
    x = 459,079,169,292.24/787,897.94
  6. Step 6: Final answer
    x = 582,663.24

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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.