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Finding the Fourth Proportional to 580,698.40, 869,881.20 and 403,405.60

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Solution

The fourth proportional to 580,698.40, 869,881.20 and 403,405.60 is: 604,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,698.40 : 869,881.20 = 403,405.60 : x
  2. Step 2: Convert to fraction form
    580,698.40/869,881.20 = 403,405.60/x
  3. Step 3: Cross multiply
    580,698.40x = 869,881.20 × 403,405.60
  4. Step 4: Simplify right side
    580,698.40x = 350,914,947,414.72
  5. Step 5: Solve for x
    x = 350,914,947,414.72/580,698.40
  6. Step 6: Final answer
    x = 604,298.11

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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.