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Finding the Fourth Proportional to 459,466.40, 687,644.40 and 403,479.20

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Solution

The fourth proportional to 459,466.40, 687,644.40 and 403,479.20 is: 603,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,466.40 : 687,644.40 = 403,479.20 : x
  2. Step 2: Convert to fraction form
    459,466.40/687,644.40 = 403,479.20/x
  3. Step 3: Cross multiply
    459,466.40x = 687,644.40 × 403,479.20
  4. Step 4: Simplify right side
    459,466.40x = 277,450,212,396.48
  5. Step 5: Solve for x
    x = 277,450,212,396.48/459,466.40
  6. Step 6: Final answer
    x = 603,853.11

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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.