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Finding the Fourth Proportional to 656,985.78, 985,478.67 and 158,349.78

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Solution

The fourth proportional to 656,985.78, 985,478.67 and 158,349.78 is: 237,524.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,985.78 : 985,478.67 = 158,349.78 : x
  2. Step 2: Convert to fraction form
    656,985.78/985,478.67 = 158,349.78/x
  3. Step 3: Cross multiply
    656,985.78x = 985,478.67 × 158,349.78
  4. Step 4: Simplify right side
    656,985.78x = 156,050,330,589.19
  5. Step 5: Solve for x
    x = 156,050,330,589.19/656,985.78
  6. Step 6: Final answer
    x = 237,524.67

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Half scale
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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.