Home / 875,255.40-1,312,883.10-520,086.60

Finding the Fourth Proportional to 875,255.40, 1,312,883.10 and 520,086.60

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Solution

The fourth proportional to 875,255.40, 1,312,883.10 and 520,086.60 is: 780,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,255.40 : 1,312,883.10 = 520,086.60 : x
  2. Step 2: Convert to fraction form
    875,255.40/1,312,883.10 = 520,086.60/x
  3. Step 3: Cross multiply
    875,255.40x = 1,312,883.10 × 520,086.60
  4. Step 4: Simplify right side
    875,255.40x = 682,812,907,676.46
  5. Step 5: Solve for x
    x = 682,812,907,676.46/875,255.40
  6. Step 6: Final answer
    x = 780,129.90

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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.