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Finding the Fourth Proportional to 608,878.61, 913,299 and 289,260.50

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Solution

The fourth proportional to 608,878.61, 913,299 and 289,260.50 is: 433,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,878.61 : 913,299 = 289,260.50 : x
  2. Step 2: Convert to fraction form
    608,878.61/913,299 = 289,260.50/x
  3. Step 3: Cross multiply
    608,878.61x = 913,299 × 289,260.50
  4. Step 4: Simplify right side
    608,878.61x = 264,181,325,389.50
  5. Step 5: Solve for x
    x = 264,181,325,389.50/608,878.61
  6. Step 6: Final answer
    x = 433,881.76

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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.