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Finding the Fourth Proportional to 657,779.87, 986,792.83 and 208,380.08

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Solution

The fourth proportional to 657,779.87, 986,792.83 and 208,380.08 is: 312,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,779.87 : 986,792.83 = 208,380.08 : x
  2. Step 2: Convert to fraction form
    657,779.87/986,792.83 = 208,380.08/x
  3. Step 3: Cross multiply
    657,779.87x = 986,792.83 × 208,380.08
  4. Step 4: Simplify right side
    657,779.87x = 205,627,970,804.86
  5. Step 5: Solve for x
    x = 205,627,970,804.86/657,779.87
  6. Step 6: Final answer
    x = 312,609.10

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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.