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Finding the Fourth Proportional to 493,346.40, 691,384.80 and 493,346.40

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Solution

The fourth proportional to 493,346.40, 691,384.80 and 493,346.40 is: 691,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,346.40 : 691,384.80 = 493,346.40 : x
  2. Step 2: Convert to fraction form
    493,346.40/691,384.80 = 493,346.40/x
  3. Step 3: Cross multiply
    493,346.40x = 691,384.80 × 493,346.40
  4. Step 4: Simplify right side
    493,346.40x = 341,092,202,094.72
  5. Step 5: Solve for x
    x = 341,092,202,094.72/493,346.40
  6. Step 6: Final answer
    x = 691,384.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.