Home / 780,015.18-1,076,407.80-435,856.68

Finding the Fourth Proportional to 780,015.18, 1,076,407.80 and 435,856.68

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Solution

The fourth proportional to 780,015.18, 1,076,407.80 and 435,856.68 is: 601,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,015.18 : 1,076,407.80 = 435,856.68 : x
  2. Step 2: Convert to fraction form
    780,015.18/1,076,407.80 = 435,856.68/x
  3. Step 3: Cross multiply
    780,015.18x = 1,076,407.80 × 435,856.68
  4. Step 4: Simplify right side
    780,015.18x = 469,159,530,034.10
  5. Step 5: Solve for x
    x = 469,159,530,034.10/780,015.18
  6. Step 6: Final answer
    x = 601,474.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.