Home / 780,010.95-1,076,395.79-435,825.75

Finding the Fourth Proportional to 780,010.95, 1,076,395.79 and 435,825.75

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Solution

The fourth proportional to 780,010.95, 1,076,395.79 and 435,825.75 is: 601,428.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,010.95 : 1,076,395.79 = 435,825.75 : x
  2. Step 2: Convert to fraction form
    780,010.95/1,076,395.79 = 435,825.75/x
  3. Step 3: Cross multiply
    780,010.95x = 1,076,395.79 × 435,825.75
  4. Step 4: Simplify right side
    780,010.95x = 469,121,002,473.59
  5. Step 5: Solve for x
    x = 469,121,002,473.59/780,010.95
  6. Step 6: Final answer
    x = 601,428.74

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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.