Home / 917,407.20-1,376,110.80-873,120.45

Finding the Fourth Proportional to 917,407.20, 1,376,110.80 and 873,120.45

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Solution

The fourth proportional to 917,407.20, 1,376,110.80 and 873,120.45 is: 1,309,680.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,407.20 : 1,376,110.80 = 873,120.45 : x
  2. Step 2: Convert to fraction form
    917,407.20/1,376,110.80 = 873,120.45/x
  3. Step 3: Cross multiply
    917,407.20x = 1,376,110.80 × 873,120.45
  4. Step 4: Simplify right side
    917,407.20x = 1,201,510,480,945.86
  5. Step 5: Solve for x
    x = 1,201,510,480,945.86/917,407.20
  6. Step 6: Final answer
    x = 1,309,680.68

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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.