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Finding the Fourth Proportional to 655,045.92, 980,534.88 and 354,780.72

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Solution

The fourth proportional to 655,045.92, 980,534.88 and 354,780.72 is: 531,069.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,045.92 : 980,534.88 = 354,780.72 : x
  2. Step 2: Convert to fraction form
    655,045.92/980,534.88 = 354,780.72/x
  3. Step 3: Cross multiply
    655,045.92x = 980,534.88 × 354,780.72
  4. Step 4: Simplify right side
    655,045.92x = 347,874,870,711.51
  5. Step 5: Solve for x
    x = 347,874,870,711.51/655,045.92
  6. Step 6: Final answer
    x = 531,069.44

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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.