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Finding the Fourth Proportional to 636,259.21, 877,985.52 and 374,572.97

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Solution

The fourth proportional to 636,259.21, 877,985.52 and 374,572.97 is: 516,879.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,259.21 : 877,985.52 = 374,572.97 : x
  2. Step 2: Convert to fraction form
    636,259.21/877,985.52 = 374,572.97/x
  3. Step 3: Cross multiply
    636,259.21x = 877,985.52 × 374,572.97
  4. Step 4: Simplify right side
    636,259.21x = 328,869,643,843.39
  5. Step 5: Solve for x
    x = 328,869,643,843.39/636,259.21
  6. Step 6: Final answer
    x = 516,879.97

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1.5x scale

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.