Home / 818,861.72-1,130,017.68-456,300.86

Finding the Fourth Proportional to 818,861.72, 1,130,017.68 and 456,300.86

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Solution

The fourth proportional to 818,861.72, 1,130,017.68 and 456,300.86 is: 629,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,861.72 : 1,130,017.68 = 456,300.86 : x
  2. Step 2: Convert to fraction form
    818,861.72/1,130,017.68 = 456,300.86/x
  3. Step 3: Cross multiply
    818,861.72x = 1,130,017.68 × 456,300.86
  4. Step 4: Simplify right side
    818,861.72x = 515,628,033,549.12
  5. Step 5: Solve for x
    x = 515,628,033,549.12/818,861.72
  6. Step 6: Final answer
    x = 629,688.78

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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.