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Finding the Fourth Proportional to 977,446.40, 1,465,478.40 and 445,222.40

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Solution

The fourth proportional to 977,446.40, 1,465,478.40 and 445,222.40 is: 667,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,446.40 : 1,465,478.40 = 445,222.40 : x
  2. Step 2: Convert to fraction form
    977,446.40/1,465,478.40 = 445,222.40/x
  3. Step 3: Cross multiply
    977,446.40x = 1,465,478.40 × 445,222.40
  4. Step 4: Simplify right side
    977,446.40x = 652,463,810,396.16
  5. Step 5: Solve for x
    x = 652,463,810,396.16/977,446.40
  6. Step 6: Final answer
    x = 667,518.76

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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.