Home / 780,379.26-1,076,604.66-618,585

Finding the Fourth Proportional to 780,379.26, 1,076,604.66 and 618,585

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Solution

The fourth proportional to 780,379.26, 1,076,604.66 and 618,585 is: 853,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,379.26 : 1,076,604.66 = 618,585 : x
  2. Step 2: Convert to fraction form
    780,379.26/1,076,604.66 = 618,585/x
  3. Step 3: Cross multiply
    780,379.26x = 1,076,604.66 × 618,585
  4. Step 4: Simplify right side
    780,379.26x = 665,971,493,606.10
  5. Step 5: Solve for x
    x = 665,971,493,606.10/780,379.26
  6. Step 6: Final answer
    x = 853,394.66

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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.