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Finding the Fourth Proportional to 830,600, 1,246,055.68 and 387,368

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Solution

The fourth proportional to 830,600, 1,246,055.68 and 387,368 is: 581,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,600 : 1,246,055.68 = 387,368 : x
  2. Step 2: Convert to fraction form
    830,600/1,246,055.68 = 387,368/x
  3. Step 3: Cross multiply
    830,600x = 1,246,055.68 × 387,368
  4. Step 4: Simplify right side
    830,600x = 482,682,096,650.24
  5. Step 5: Solve for x
    x = 482,682,096,650.24/830,600
  6. Step 6: Final answer
    x = 581,124.60

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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.