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Finding the Fourth Proportional to 1,295,206.90, 1,942,810.35 and 917,293.30

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Solution

The fourth proportional to 1,295,206.90, 1,942,810.35 and 917,293.30 is: 1,375,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,206.90 : 1,942,810.35 = 917,293.30 : x
  2. Step 2: Convert to fraction form
    1,295,206.90/1,942,810.35 = 917,293.30/x
  3. Step 3: Cross multiply
    1,295,206.90x = 1,942,810.35 × 917,293.30
  4. Step 4: Simplify right side
    1,295,206.90x = 1,782,126,917,225.66
  5. Step 5: Solve for x
    x = 1,782,126,917,225.66/1,295,206.90
  6. Step 6: Final answer
    x = 1,375,939.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.