Home / 875,082.40-1,309,999.20-519,913.60

Finding the Fourth Proportional to 875,082.40, 1,309,999.20 and 519,913.60

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Solution

The fourth proportional to 875,082.40, 1,309,999.20 and 519,913.60 is: 778,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,082.40 : 1,309,999.20 = 519,913.60 : x
  2. Step 2: Convert to fraction form
    875,082.40/1,309,999.20 = 519,913.60/x
  3. Step 3: Cross multiply
    875,082.40x = 1,309,999.20 × 519,913.60
  4. Step 4: Simplify right side
    875,082.40x = 681,086,400,069.12
  5. Step 5: Solve for x
    x = 681,086,400,069.12/875,082.40
  6. Step 6: Final answer
    x = 778,311.16

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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.