Home / 919,861.96-1,378,151.34-498,869.32

Finding the Fourth Proportional to 919,861.96, 1,378,151.34 and 498,869.32

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Solution

The fourth proportional to 919,861.96, 1,378,151.34 and 498,869.32 is: 747,413.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,861.96 : 1,378,151.34 = 498,869.32 : x
  2. Step 2: Convert to fraction form
    919,861.96/1,378,151.34 = 498,869.32/x
  3. Step 3: Cross multiply
    919,861.96x = 1,378,151.34 × 498,869.32
  4. Step 4: Simplify right side
    919,861.96x = 687,517,421,842.89
  5. Step 5: Solve for x
    x = 687,517,421,842.89/919,861.96
  6. Step 6: Final answer
    x = 747,413.69

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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.