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Finding the Fourth Proportional to 620,909.80, 930,585.50 and 265,505.96

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Solution

The fourth proportional to 620,909.80, 930,585.50 and 265,505.96 is: 397,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,909.80 : 930,585.50 = 265,505.96 : x
  2. Step 2: Convert to fraction form
    620,909.80/930,585.50 = 265,505.96/x
  3. Step 3: Cross multiply
    620,909.80x = 930,585.50 × 265,505.96
  4. Step 4: Simplify right side
    620,909.80x = 247,075,996,539.58
  5. Step 5: Solve for x
    x = 247,075,996,539.58/620,909.80
  6. Step 6: Final answer
    x = 397,925.75

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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.