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Finding the Fourth Proportional to 659,411.70, 989,117.55 and 305,117.70

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Solution

The fourth proportional to 659,411.70, 989,117.55 and 305,117.70 is: 457,676.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,411.70 : 989,117.55 = 305,117.70 : x
  2. Step 2: Convert to fraction form
    659,411.70/989,117.55 = 305,117.70/x
  3. Step 3: Cross multiply
    659,411.70x = 989,117.55 × 305,117.70
  4. Step 4: Simplify right side
    659,411.70x = 301,797,271,885.64
  5. Step 5: Solve for x
    x = 301,797,271,885.64/659,411.70
  6. Step 6: Final answer
    x = 457,676.55

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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.