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Finding the Fourth Proportional to 665,343,196.40, 998,014,794.60 and 493,156,312.40

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Solution

The fourth proportional to 665,343,196.40, 998,014,794.60 and 493,156,312.40 is: 739,734,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,343,196.40 : 998,014,794.60 = 493,156,312.40 : x
  2. Step 2: Convert to fraction form
    665,343,196.40/998,014,794.60 = 493,156,312.40/x
  3. Step 3: Cross multiply
    665,343,196.40x = 998,014,794.60 × 493,156,312.40
  4. Step 4: Simplify right side
    665,343,196.40x = 492,177,295,825,579,392
  5. Step 5: Solve for x
    x = 492,177,295,825,579,392/665,343,196.40
  6. Step 6: Final answer
    x = 739,734,468.60

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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.