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Finding the Fourth Proportional to 608,913.40, 854,345 and 608,913.40

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Solution

The fourth proportional to 608,913.40, 854,345 and 608,913.40 is: 854,345

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,913.40 : 854,345 = 608,913.40 : x
  2. Step 2: Convert to fraction form
    608,913.40/854,345 = 608,913.40/x
  3. Step 3: Cross multiply
    608,913.40x = 854,345 × 608,913.40
  4. Step 4: Simplify right side
    608,913.40x = 520,222,118,723
  5. Step 5: Solve for x
    x = 520,222,118,723/608,913.40
  6. Step 6: Final answer
    x = 854,345

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.