Home / 875,009.40-1,309,889.70-519,840.60

Finding the Fourth Proportional to 875,009.40, 1,309,889.70 and 519,840.60

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Solution

The fourth proportional to 875,009.40, 1,309,889.70 and 519,840.60 is: 778,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,009.40 : 1,309,889.70 = 519,840.60 : x
  2. Step 2: Convert to fraction form
    875,009.40/1,309,889.70 = 519,840.60/x
  3. Step 3: Cross multiply
    875,009.40x = 1,309,889.70 × 519,840.60
  4. Step 4: Simplify right side
    875,009.40x = 680,933,847,581.82
  5. Step 5: Solve for x
    x = 680,933,847,581.82/875,009.40
  6. Step 6: Final answer
    x = 778,201.75

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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.