Home / 780,513.20-1,076,970.42-436,239.08

Finding the Fourth Proportional to 780,513.20, 1,076,970.42 and 436,239.08

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Solution

The fourth proportional to 780,513.20, 1,076,970.42 and 436,239.08 is: 601,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,513.20 : 1,076,970.42 = 436,239.08 : x
  2. Step 2: Convert to fraction form
    780,513.20/1,076,970.42 = 436,239.08/x
  3. Step 3: Cross multiply
    780,513.20x = 1,076,970.42 × 436,239.08
  4. Step 4: Simplify right side
    780,513.20x = 469,816,579,823.16
  5. Step 5: Solve for x
    x = 469,816,579,823.16/780,513.20
  6. Step 6: Final answer
    x = 601,932.91

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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.