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Finding the Fourth Proportional to 1,937,104.90, 2,904,620.55 and 813,904.90

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Solution

The fourth proportional to 1,937,104.90, 2,904,620.55 and 813,904.90 is: 1,220,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937,104.90 : 2,904,620.55 = 813,904.90 : x
  2. Step 2: Convert to fraction form
    1,937,104.90/2,904,620.55 = 813,904.90/x
  3. Step 3: Cross multiply
    1,937,104.90x = 2,904,620.55 × 813,904.90
  4. Step 4: Simplify right side
    1,937,104.90x = 2,364,084,898,285.69
  5. Step 5: Solve for x
    x = 2,364,084,898,285.69/1,937,104.90
  6. Step 6: Final answer
    x = 1,220,421.72

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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.