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Finding the Fourth Proportional to 497,846.40, 746,769.60 and 478,492.80

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Solution

The fourth proportional to 497,846.40, 746,769.60 and 478,492.80 is: 717,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,846.40 : 746,769.60 = 478,492.80 : x
  2. Step 2: Convert to fraction form
    497,846.40/746,769.60 = 478,492.80/x
  3. Step 3: Cross multiply
    497,846.40x = 746,769.60 × 478,492.80
  4. Step 4: Simplify right side
    497,846.40x = 357,323,876,858.88
  5. Step 5: Solve for x
    x = 357,323,876,858.88/497,846.40
  6. Step 6: Final answer
    x = 717,739.20

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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.