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Finding the Fourth Proportional to 777,780.60, 1,166,670.90 and 620,316.60

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Solution

The fourth proportional to 777,780.60, 1,166,670.90 and 620,316.60 is: 930,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,780.60 : 1,166,670.90 = 620,316.60 : x
  2. Step 2: Convert to fraction form
    777,780.60/1,166,670.90 = 620,316.60/x
  3. Step 3: Cross multiply
    777,780.60x = 1,166,670.90 × 620,316.60
  4. Step 4: Simplify right side
    777,780.60x = 723,705,326,006.94
  5. Step 5: Solve for x
    x = 723,705,326,006.94/777,780.60
  6. Step 6: Final answer
    x = 930,474.90

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1.5x scale

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.