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Finding the Fourth Proportional to 637,981.20, 957,409.20 and 283,249.80

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Solution

The fourth proportional to 637,981.20, 957,409.20 and 283,249.80 is: 425,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,981.20 : 957,409.20 = 283,249.80 : x
  2. Step 2: Convert to fraction form
    637,981.20/957,409.20 = 283,249.80/x
  3. Step 3: Cross multiply
    637,981.20x = 957,409.20 × 283,249.80
  4. Step 4: Simplify right side
    637,981.20x = 271,185,964,418.16
  5. Step 5: Solve for x
    x = 271,185,964,418.16/637,981.20
  6. Step 6: Final answer
    x = 425,068.90

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.