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Finding the Fourth Proportional to 608,676.96, 840,089.52 and 407,821.92

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Solution

The fourth proportional to 608,676.96, 840,089.52 and 407,821.92 is: 562,871.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,676.96 : 840,089.52 = 407,821.92 : x
  2. Step 2: Convert to fraction form
    608,676.96/840,089.52 = 407,821.92/x
  3. Step 3: Cross multiply
    608,676.96x = 840,089.52 × 407,821.92
  4. Step 4: Simplify right side
    608,676.96x = 342,606,921,018.28
  5. Step 5: Solve for x
    x = 342,606,921,018.28/608,676.96
  6. Step 6: Final answer
    x = 562,871.51

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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.