Home / 1,515,078.72-2,090,747.52-836,006.40

Finding the Fourth Proportional to 1,515,078.72, 2,090,747.52 and 836,006.40

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Solution

The fourth proportional to 1,515,078.72, 2,090,747.52 and 836,006.40 is: 1,153,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,078.72 : 2,090,747.52 = 836,006.40 : x
  2. Step 2: Convert to fraction form
    1,515,078.72/2,090,747.52 = 836,006.40/x
  3. Step 3: Cross multiply
    1,515,078.72x = 2,090,747.52 × 836,006.40
  4. Step 4: Simplify right side
    1,515,078.72x = 1,747,878,307,504.13
  5. Step 5: Solve for x
    x = 1,747,878,307,504.13/1,515,078.72
  6. Step 6: Final answer
    x = 1,153,655.11

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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.