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Finding the Fourth Proportional to 626,953.96, 865,249.86 and 355,069.36

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Solution

The fourth proportional to 626,953.96, 865,249.86 and 355,069.36 is: 490,025.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,953.96 : 865,249.86 = 355,069.36 : x
  2. Step 2: Convert to fraction form
    626,953.96/865,249.86 = 355,069.36/x
  3. Step 3: Cross multiply
    626,953.96x = 865,249.86 × 355,069.36
  4. Step 4: Simplify right side
    626,953.96x = 307,223,714,030.29
  5. Step 5: Solve for x
    x = 307,223,714,030.29/626,953.96
  6. Step 6: Final answer
    x = 490,025.96

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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.