Home / 875,007.40-1,309,886.70-519,838.60

Finding the Fourth Proportional to 875,007.40, 1,309,886.70 and 519,838.60

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Solution

The fourth proportional to 875,007.40, 1,309,886.70 and 519,838.60 is: 778,198.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,007.40 : 1,309,886.70 = 519,838.60 : x
  2. Step 2: Convert to fraction form
    875,007.40/1,309,886.70 = 519,838.60/x
  3. Step 3: Cross multiply
    875,007.40x = 1,309,886.70 × 519,838.60
  4. Step 4: Simplify right side
    875,007.40x = 680,929,668,286.62
  5. Step 5: Solve for x
    x = 680,929,668,286.62/875,007.40
  6. Step 6: Final answer
    x = 778,198.75

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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.