Home / 780,688.76-1,170,129.54-359,079.80

Finding the Fourth Proportional to 780,688.76, 1,170,129.54 and 359,079.80

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Solution

The fourth proportional to 780,688.76, 1,170,129.54 and 359,079.80 is: 538,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,688.76 : 1,170,129.54 = 359,079.80 : x
  2. Step 2: Convert to fraction form
    780,688.76/1,170,129.54 = 359,079.80/x
  3. Step 3: Cross multiply
    780,688.76x = 1,170,129.54 × 359,079.80
  4. Step 4: Simplify right side
    780,688.76x = 420,169,881,197.29
  5. Step 5: Solve for x
    x = 420,169,881,197.29/780,688.76
  6. Step 6: Final answer
    x = 538,204.09

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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.