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Finding the Fourth Proportional to 715,522.24, 986,380.50 and 499,993.12

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Solution

The fourth proportional to 715,522.24, 986,380.50 and 499,993.12 is: 689,263.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,522.24 : 986,380.50 = 499,993.12 : x
  2. Step 2: Convert to fraction form
    715,522.24/986,380.50 = 499,993.12/x
  3. Step 3: Cross multiply
    715,522.24x = 986,380.50 × 499,993.12
  4. Step 4: Simplify right side
    715,522.24x = 493,183,463,702.16
  5. Step 5: Solve for x
    x = 493,183,463,702.16/715,522.24
  6. Step 6: Final answer
    x = 689,263.64

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.