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Finding the Fourth Proportional to 976,798.80, 1,465,198.20 and 445,357.80

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Solution

The fourth proportional to 976,798.80, 1,465,198.20 and 445,357.80 is: 668,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,798.80 : 1,465,198.20 = 445,357.80 : x
  2. Step 2: Convert to fraction form
    976,798.80/1,465,198.20 = 445,357.80/x
  3. Step 3: Cross multiply
    976,798.80x = 1,465,198.20 × 445,357.80
  4. Step 4: Simplify right side
    976,798.80x = 652,537,446,915.96
  5. Step 5: Solve for x
    x = 652,537,446,915.96/976,798.80
  6. Step 6: Final answer
    x = 668,036.70

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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.