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Finding the Fourth Proportional to 659,576.70, 989,365.05 and 659,576.70

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Solution

The fourth proportional to 659,576.70, 989,365.05 and 659,576.70 is: 989,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,576.70 : 989,365.05 = 659,576.70 : x
  2. Step 2: Convert to fraction form
    659,576.70/989,365.05 = 659,576.70/x
  3. Step 3: Cross multiply
    659,576.70x = 989,365.05 × 659,576.70
  4. Step 4: Simplify right side
    659,576.70x = 652,562,134,774.34
  5. Step 5: Solve for x
    x = 652,562,134,774.34/659,576.70
  6. Step 6: Final answer
    x = 989,365.05

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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.