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Finding the Fourth Proportional to 607,672.36, 911,703.20 and 425,492.87

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Solution

The fourth proportional to 607,672.36, 911,703.20 and 425,492.87 is: 638,375.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,672.36 : 911,703.20 = 425,492.87 : x
  2. Step 2: Convert to fraction form
    607,672.36/911,703.20 = 425,492.87/x
  3. Step 3: Cross multiply
    607,672.36x = 911,703.20 × 425,492.87
  4. Step 4: Simplify right side
    607,672.36x = 387,923,211,156.18
  5. Step 5: Solve for x
    x = 387,923,211,156.18/607,672.36
  6. Step 6: Final answer
    x = 638,375.61

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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.