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Finding the Fourth Proportional to 1,319,903.70, 1,979,855.55 and 1,001,039.10

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Solution

The fourth proportional to 1,319,903.70, 1,979,855.55 and 1,001,039.10 is: 1,501,558.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,903.70 : 1,979,855.55 = 1,001,039.10 : x
  2. Step 2: Convert to fraction form
    1,319,903.70/1,979,855.55 = 1,001,039.10/x
  3. Step 3: Cross multiply
    1,319,903.70x = 1,979,855.55 × 1,001,039.10
  4. Step 4: Simplify right side
    1,319,903.70x = 1,981,912,817,902.01
  5. Step 5: Solve for x
    x = 1,981,912,817,902.01/1,319,903.70
  6. Step 6: Final answer
    x = 1,501,558.65

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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.