Home / 780,394.02-1,076,625-618,599.76

Finding the Fourth Proportional to 780,394.02, 1,076,625 and 618,599.76

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Solution

The fourth proportional to 780,394.02, 1,076,625 and 618,599.76 is: 853,415.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,394.02 : 1,076,625 = 618,599.76 : x
  2. Step 2: Convert to fraction form
    780,394.02/1,076,625 = 618,599.76/x
  3. Step 3: Cross multiply
    780,394.02x = 1,076,625 × 618,599.76
  4. Step 4: Simplify right side
    780,394.02x = 665,999,966,610
  5. Step 5: Solve for x
    x = 665,999,966,610/780,394.02
  6. Step 6: Final answer
    x = 853,415.01

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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.