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Finding the Fourth Proportional to 662,666.30, 993,999.45 and 459,712.70

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Solution

The fourth proportional to 662,666.30, 993,999.45 and 459,712.70 is: 689,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,666.30 : 993,999.45 = 459,712.70 : x
  2. Step 2: Convert to fraction form
    662,666.30/993,999.45 = 459,712.70/x
  3. Step 3: Cross multiply
    662,666.30x = 993,999.45 × 459,712.70
  4. Step 4: Simplify right side
    662,666.30x = 456,954,170,958.02
  5. Step 5: Solve for x
    x = 456,954,170,958.02/662,666.30
  6. Step 6: Final answer
    x = 689,569.05

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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.