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Finding the Fourth Proportional to 804,915.90, 1,207,373.85 and 744,090.30

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Solution

The fourth proportional to 804,915.90, 1,207,373.85 and 744,090.30 is: 1,116,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,915.90 : 1,207,373.85 = 744,090.30 : x
  2. Step 2: Convert to fraction form
    804,915.90/1,207,373.85 = 744,090.30/x
  3. Step 3: Cross multiply
    804,915.90x = 1,207,373.85 × 744,090.30
  4. Step 4: Simplify right side
    804,915.90x = 898,395,170,258.66
  5. Step 5: Solve for x
    x = 898,395,170,258.66/804,915.90
  6. Step 6: Final answer
    x = 1,116,135.45

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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.