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Finding the Fourth Proportional to 804,907.10, 1,205,611.05 and 488,812.70

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Solution

The fourth proportional to 804,907.10, 1,205,611.05 and 488,812.70 is: 732,156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,907.10 : 1,205,611.05 = 488,812.70 : x
  2. Step 2: Convert to fraction form
    804,907.10/1,205,611.05 = 488,812.70/x
  3. Step 3: Cross multiply
    804,907.10x = 1,205,611.05 × 488,812.70
  4. Step 4: Simplify right side
    804,907.10x = 589,317,992,500.34
  5. Step 5: Solve for x
    x = 589,317,992,500.34/804,907.10
  6. Step 6: Final answer
    x = 732,156.53

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1.5x scale

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.