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Finding the Fourth Proportional to 647,810.27, 893,975.83 and 361,330.13

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Solution

The fourth proportional to 647,810.27, 893,975.83 and 361,330.13 is: 498,634.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,810.27 : 893,975.83 = 361,330.13 : x
  2. Step 2: Convert to fraction form
    647,810.27/893,975.83 = 361,330.13/x
  3. Step 3: Cross multiply
    647,810.27x = 893,975.83 × 361,330.13
  4. Step 4: Simplify right side
    647,810.27x = 323,020,402,870.76
  5. Step 5: Solve for x
    x = 323,020,402,870.76/647,810.27
  6. Step 6: Final answer
    x = 498,634.27

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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.