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Finding the Fourth Proportional to 665,342,891.40, 998,014,337.10 and 493,156,007.40

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Solution

The fourth proportional to 665,342,891.40, 998,014,337.10 and 493,156,007.40 is: 739,734,011.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,342,891.40 : 998,014,337.10 = 493,156,007.40 : x
  2. Step 2: Convert to fraction form
    665,342,891.40/998,014,337.10 = 493,156,007.40/x
  3. Step 3: Cross multiply
    665,342,891.40x = 998,014,337.10 × 493,156,007.40
  4. Step 4: Simplify right side
    665,342,891.40x = 492,176,765,812,193,664
  5. Step 5: Solve for x
    x = 492,176,765,812,193,664/665,342,891.40
  6. Step 6: Final answer
    x = 739,734,011.10

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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.