Home / 875,918.40-1,311,253.20-520,749.60

Finding the Fourth Proportional to 875,918.40, 1,311,253.20 and 520,749.60

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Solution

The fourth proportional to 875,918.40, 1,311,253.20 and 520,749.60 is: 779,564.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,918.40 : 1,311,253.20 = 520,749.60 : x
  2. Step 2: Convert to fraction form
    875,918.40/1,311,253.20 = 520,749.60/x
  3. Step 3: Cross multiply
    875,918.40x = 1,311,253.20 × 520,749.60
  4. Step 4: Simplify right side
    875,918.40x = 682,834,579,398.72
  5. Step 5: Solve for x
    x = 682,834,579,398.72/875,918.40
  6. Step 6: Final answer
    x = 779,564.15

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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.