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Finding the Fourth Proportional to 643,514.52, 888,050.14 and 357,033.92

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Solution

The fourth proportional to 643,514.52, 888,050.14 and 357,033.92 is: 492,706.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,514.52 : 888,050.14 = 357,033.92 : x
  2. Step 2: Convert to fraction form
    643,514.52/888,050.14 = 357,033.92/x
  3. Step 3: Cross multiply
    643,514.52x = 888,050.14 × 357,033.92
  4. Step 4: Simplify right side
    643,514.52x = 317,064,024,311.51
  5. Step 5: Solve for x
    x = 317,064,024,311.51/643,514.52
  6. Step 6: Final answer
    x = 492,706.87

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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.