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Finding the Fourth Proportional to 1,099,569.60, 1,649,354.40 and 389,669.40

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Solution

The fourth proportional to 1,099,569.60, 1,649,354.40 and 389,669.40 is: 584,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,569.60 : 1,649,354.40 = 389,669.40 : x
  2. Step 2: Convert to fraction form
    1,099,569.60/1,649,354.40 = 389,669.40/x
  3. Step 3: Cross multiply
    1,099,569.60x = 1,649,354.40 × 389,669.40
  4. Step 4: Simplify right side
    1,099,569.60x = 642,702,939,435.36
  5. Step 5: Solve for x
    x = 642,702,939,435.36/1,099,569.60
  6. Step 6: Final answer
    x = 584,504.10

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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.