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Finding the Fourth Proportional to 1,269,957.02, 1,904,861.33 and 928,746.05

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Solution

The fourth proportional to 1,269,957.02, 1,904,861.33 and 928,746.05 is: 1,393,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,957.02 : 1,904,861.33 = 928,746.05 : x
  2. Step 2: Convert to fraction form
    1,269,957.02/1,904,861.33 = 928,746.05/x
  3. Step 3: Cross multiply
    1,269,957.02x = 1,904,861.33 × 928,746.05
  4. Step 4: Simplify right side
    1,269,957.02x = 1,769,132,421,867.21
  5. Step 5: Solve for x
    x = 1,769,132,421,867.21/1,269,957.02
  6. Step 6: Final answer
    x = 1,393,064.81

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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.