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Finding the Fourth Proportional to 677,310.40, 946,990.40 and 677,310.40

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Solution

The fourth proportional to 677,310.40, 946,990.40 and 677,310.40 is: 946,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,310.40 : 946,990.40 = 677,310.40 : x
  2. Step 2: Convert to fraction form
    677,310.40/946,990.40 = 677,310.40/x
  3. Step 3: Cross multiply
    677,310.40x = 946,990.40 × 677,310.40
  4. Step 4: Simplify right side
    677,310.40x = 641,406,446,620.16
  5. Step 5: Solve for x
    x = 641,406,446,620.16/677,310.40
  6. Step 6: Final answer
    x = 946,990.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.