Home / 776,165.10-1,070,530.47-685,360.86

Finding the Fourth Proportional to 776,165.10, 1,070,530.47 and 685,360.86

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Solution

The fourth proportional to 776,165.10, 1,070,530.47 and 685,360.86 is: 945,288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,165.10 : 1,070,530.47 = 685,360.86 : x
  2. Step 2: Convert to fraction form
    776,165.10/1,070,530.47 = 685,360.86/x
  3. Step 3: Cross multiply
    776,165.10x = 1,070,530.47 × 685,360.86
  4. Step 4: Simplify right side
    776,165.10x = 733,699,683,575.40
  5. Step 5: Solve for x
    x = 733,699,683,575.40/776,165.10
  6. Step 6: Final answer
    x = 945,288.17

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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.