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Finding the Fourth Proportional to 497,756.40, 746,634.60 and 298,690.80

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Solution

The fourth proportional to 497,756.40, 746,634.60 and 298,690.80 is: 448,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,756.40 : 746,634.60 = 298,690.80 : x
  2. Step 2: Convert to fraction form
    497,756.40/746,634.60 = 298,690.80/x
  3. Step 3: Cross multiply
    497,756.40x = 746,634.60 × 298,690.80
  4. Step 4: Simplify right side
    497,756.40x = 223,012,885,981.68
  5. Step 5: Solve for x
    x = 223,012,885,981.68/497,756.40
  6. Step 6: Final answer
    x = 448,036.20

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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.