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Finding the Fourth Proportional to 665,417.70, 998,126.55 and 488,270.70

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Solution

The fourth proportional to 665,417.70, 998,126.55 and 488,270.70 is: 732,406.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,417.70 : 998,126.55 = 488,270.70 : x
  2. Step 2: Convert to fraction form
    665,417.70/998,126.55 = 488,270.70/x
  3. Step 3: Cross multiply
    665,417.70x = 998,126.55 × 488,270.70
  4. Step 4: Simplify right side
    665,417.70x = 487,355,949,257.09
  5. Step 5: Solve for x
    x = 487,355,949,257.09/665,417.70
  6. Step 6: Final answer
    x = 732,406.05

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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.