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Finding the Fourth Proportional to 608,875.10, 913,312.65 and 328,939.10

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Solution

The fourth proportional to 608,875.10, 913,312.65 and 328,939.10 is: 493,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,875.10 : 913,312.65 = 328,939.10 : x
  2. Step 2: Convert to fraction form
    608,875.10/913,312.65 = 328,939.10/x
  3. Step 3: Cross multiply
    608,875.10x = 913,312.65 × 328,939.10
  4. Step 4: Simplify right side
    608,875.10x = 300,424,241,109.62
  5. Step 5: Solve for x
    x = 300,424,241,109.62/608,875.10
  6. Step 6: Final answer
    x = 493,408.65

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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.