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Finding the Fourth Proportional to 427,892,628, 590,506,423.92 and 239,728,856.34

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Solution

The fourth proportional to 427,892,628, 590,506,423.92 and 239,728,856.34 is: 330,833,999.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,892,628 : 590,506,423.92 = 239,728,856.34 : x
  2. Step 2: Convert to fraction form
    427,892,628/590,506,423.92 = 239,728,856.34/x
  3. Step 3: Cross multiply
    427,892,628x = 590,506,423.92 × 239,728,856.34
  4. Step 4: Simplify right side
    427,892,628x = 141,561,429,667,764,816
  5. Step 5: Solve for x
    x = 141,561,429,667,764,816/427,892,628
  6. Step 6: Final answer
    x = 330,833,999.94

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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.