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Finding the Fourth Proportional to 470,956.01, 649,690.88 and 279,834.08

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Solution

The fourth proportional to 470,956.01, 649,690.88 and 279,834.08 is: 386,035.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,956.01 : 649,690.88 = 279,834.08 : x
  2. Step 2: Convert to fraction form
    470,956.01/649,690.88 = 279,834.08/x
  3. Step 3: Cross multiply
    470,956.01x = 649,690.88 × 279,834.08
  4. Step 4: Simplify right side
    470,956.01x = 181,805,645,041.57
  5. Step 5: Solve for x
    x = 181,805,645,041.57/470,956.01
  6. Step 6: Final answer
    x = 386,035.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.